Biggest changeThe increase in tax benefit was driven by an increase of $52.7 million due to the tax impact on the pre-tax loss of $205.2 million in 2022 as compared to $46.3 million of pre-tax income in 2021, an increase of $14.7 million related to capital loss, an increase of $7.2 million due to higher foreign-derived intangible income deduction, and an increase of $5.1 million due to higher research and development credit, offset by a decrease of $30.1 million related to decrease in stock-based compensation benefit, a decrease of $15.7 million due to higher US-foreign rate differential, a decrease of $5.6 million due to higher foreign income inclusion and a decrease of $5.2 million due to higher valuation allowance. 53 Table of Contents Comparison of our Segment Results of Operations The following table presents the results for our Software Platform and Apps segment adjusted EBITDA for the periods indicated: Years Ended December 31, 2022 to 2023 % change 2021 to 2022 % change 2023 2022 2021 (in thousands, except percentages) Software Platform Adjusted EBITDA $ 1,275,705 $ 808,415 $ 457,302 58 % 77 % Apps Adjusted EBITDA $ 226,953 $ 254,795 $ 269,512 (11) % (5) % Twelve Months Ended December 31, 2023 Compared to Twelve Months Ended December 31, 2022 The $467.3 million, or 58%, increase in Software Platform Adjusted EBITDA for 2023 was primarily driven by an increase in Software Platform revenue of $792.6 million, partially offset by an increase of $49.5 million in expenses associated with our network infrastructure and an increase of $46.6 million in personnel-related expenses related to an increase in stock-based compensation expense as a result of an increase in headcount.
Biggest changeThe increase in tax provision was primarily driven by an increase of $119.0 million due to the tax impact on the pre-tax income of $380.6 million in 2023 as compared to pre-tax loss of $205.2 million in 2022, offset by $65.7 million related to foreign rate differential and income inclusion, an increase of $16.5 million related to increase in Global Intangible Low-Taxed Income offset by an increase in foreign tax credit, an increase of $25.9 million of stock-based compensation benefit, and an increase of $13.3 million in the research and development credit. 52 Table of Contents Comparison of our Segment Results of Operations The following table presents the results for our Advertising and Apps segment adjusted EBITDA for the periods indicated: Year Ended December 31, 2023 to 2024 % change 2022 to 2023 % change 2024 2023 2022 (in thousands, except percentages) Advertising Adjusted EBITDA $ 2,442,597 $ 1,275,705 $ 808,415 91 % 58 % Apps Adjusted EBITDA $ 277,008 $ 226,953 $ 254,795 22 % (11) % Twelve Months Ended December 31, 2024 Compared to Twelve Months Ended December 31, 2023 The $1.2 billion, or 91%, increase in Advertising Adjusted EBITDA for 2024 was primarily driven by an increase in Advertising Revenue of $1.4 billion, partially offset by an increase of $141.3 million in expenses associated with our network infrastructure and an increase of $33.3 million in personnel-related expenses.
Revenue from Adjust is primarily generated from an annual software subscription fee. Software Platform clients use Wurl's CTV platform to distribute streaming video, maximize advertising revenue, and acquire and retain viewers or subscribers. Revenue from Wurl is primarily generated from content companies, typically on a usage-based model.
Revenue from Adjust is primarily generated from an annual software subscription fee. Advertising clients use Wurl's CTV platform to distribute streaming video, maximize Advertising Revenue, and acquire and retain viewers or subscribers. Revenue from Wurl is primarily generated from content companies, typically on a usage-based model.
Other income (expense), net, primarily includes interest earned on our cash and cash equivalents, fair value adjustments relating to our non-marketable equity securities, and foreign currency gains and losses. Provision for (benefit from) income taxes. We are subject to income taxes in the United States and foreign jurisdictions in which we do business.
Other income, net, primarily includes interest earned on our cash and cash equivalents, fair value adjustments relating to our non-marketable equity securities, and foreign currency gains and losses. Provision for (benefit from) income taxes. We are subject to income taxes in the United States and foreign jurisdictions in which we do business.
These third-party platforms have significant market power and discretion to set platform fees, select which apps to promote, and decide how much consumer information to provide to advertising networks that enable our Software Platform to target users with personalized and relevant advertising and allocate marketing campaigns in an efficient and cost-effective manner.
These third-party platforms have significant market power and discretion to set platform fees, select which apps to promote, and decide how much consumer information to provide to advertising networks that enable our Advertising solutions to target users with personalized and relevant advertising and allocate marketing campaigns in an efficient and cost-effective manner.
We capitalized on our success and understanding of the mobile app ecosystem by entering into the mobile game apps industry in 2018. Our global diversified portfolio of apps now consist of over 200 free-to-play mobile games across five genres, run by eleven studios.
We capitalized on our success and understanding of the mobile app ecosystem by entering into the mobile game apps industry in 2018. Our global diversified portfolio of apps now consist of over 200 free-to-play mobile games across five genres, run by ten studios.
Our founders, who were mobile app developers themselves, quickly realized the real impediment to success and growth in the advertising ecosystem was a discovery and monetization problem—breaking through the congested app stores to efficiently find users and successfully grow their business. Their first-hand experience with these challenges led to the development of our infrastructure and Software Platform.
Our founders, who were mobile app developers themselves, quickly realized the real impediment to success and growth in the advertising ecosystem was a discovery and monetization problem—breaking through the congested app stores to efficiently find users and successfully grow their business. Their first-hand experience with these challenges led to the development of our infrastructure and Advertising solutions.
Revenue is generated from our advertisers, typically on a performance-basis, and shared with our advertising publishers, typically on a cost per impression model. Software Platform clients use MAX to optimize purchases of app advertising inventory. The MAX tool suite provides insights to manage against key performance indicators, understand the long-term value of users, and help manage profitability.
Revenue is generated from our advertisers, typically on a performance-basis, and shared with our advertising publishers, typically on a cost per impression model. Advertising clients use MAX to optimize purchases of app advertising inventory. The MAX tool provides insights to manage against key performance indicators, understand the long-term value of users, and help manage profitability.
Software Platform Revenue also includes fees generated based on a percentage of client spend through MAX and subscription fees for Adjust's measurement and analytics marketing platform. Revenue from other services under Software Platform was not material.
Advertising Revenue also includes fees generated based on a percentage of client spend through MAX and subscription fees for Adjust's measurement and analytics marketing platform. Revenue from other services under Advertising was not material.
Components of Results of Operations Revenue We generate Software Platform Revenue primarily from fees collected from advertisers spending on AppDiscovery, typically on a performance basis, then shared with our advertising publishers, typically on a cost per impression basis.
Components of Results of Operations Revenue We generate Advertising Revenue primarily from fees collected from advertisers spending on AppDiscovery, typically on a performance basis, then shared with our advertising publishers, typically on a cost per impression basis.
By increasing the number of users and their engagement, as well as better matching ads with the appropriate target audience, we are able to increase our revenue from IAA clients that purchase advertising inventory from our Apps. IAA Revenue represented 31% of total Apps Revenue for the twelve months ended December 31, 2023.
By increasing the number of users and their engagement, as well as better matching ads with the appropriate target audience, we are able to increase our revenue from IAA clients that purchase advertising inventory from our Apps. IAA Revenue represented 32% of total Apps Revenue for the twelve months ended December 31, 2024.
Software Platform clients include a wide variety of advertisers, from indie developer studios to some of the largest global internet platforms, such as Facebook and Google. We see multiple opportunities to gain new Software Platform clients, and to increase spend from existing clients, as we help them grow their businesses and make them more successful.
Advertising clients include a wide variety of advertisers, from indie developer studios to some of the largest global internet platforms, such as Facebook and Google. We see multiple opportunities to gain new Advertising clients, and to increase spend from existing clients, as we help them grow their businesses and make them more successful.
As we improve our Software Platform and Apps, we can attract additional spend from these clients. Our clients include indie studio developers and some of the largest advertising platforms in the world. We believe there is significant room for us to further expand our relationships with these clients and increase their usage of our Software Platform.
As we improve our Advertising solutions and Apps, we can attract additional spend from these clients. Our clients include indie studio developers and some of the largest advertising platforms in the world. We believe there is significant room for us to further expand our relationships with these clients and increase their usage of our Advertising solutions.
We use Adjusted EBITDA and Adjusted EBITDA margin in conjunction with GAAP measures as part of our overall assessment of our performance, including the preparation of 45 Table of Contents our annual operating budget and quarterly forecasts, to evaluate the effectiveness of our business strategies, and to communicate with our board of directors concerning our financial performance.
We use Adjusted EBITDA and Adjusted EBITDA margin in conjunction with GAAP measures as part of our overall assessment of our performance, including the preparation of our annual operating budget and quarterly forecasts, to evaluate the effectiveness of our business strategies, and to communicate with our board of directors concerning our financial performance.
Our clients leverage a broad set of high-performing mobile ad formats, including playable and rewarded video, and are able to match these ads with relevant users resulting in a better return on their advertising spend.
Our clients leverage a broad set of high-performing mobile ad formats, including playable and rewarded video, and are able to match these ads with relevant users resulting in a better return on their advertising 44 Table of Contents spend.
Recent Accounting Pronouncements See Note 2 to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for recently adopted accounting pronouncements and recently issued accounting pronouncements not yet adopted as of the dates of the statement of financial position included in this Annual Report on 10-K. 59 Table of Contents
Recent Accounting Pronouncements See Note 2 to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for recently adopted accounting pronouncements and recently issued accounting pronouncements not yet adopted as of the dates of the statement of financial position included in this Annual Report on 10-K.
To the extent we are unable to utilize IDFA or a similar offering, or if the transparency changes and any related opt-in or other requirements result in decreases in the availability or utility of data relating to Apps, our Software Platform may not be as effective, we may not be able to continue to efficiently generate revenue for our Apps, and our revenue and results of operations may be harmed.
To the extent we are unable to utilize IDFA or a similar offering, or if the transparency changes and any related opt-in or other requirements result in decreases in the availability or utility of data relating to Apps, our Advertising solutions may not be as effective, we may not be able to continue to efficiently generate revenue for our Apps, and our revenue and results of operations may be harmed.
The increase in Software Platform revenue was also due to improved AppDiscovery performance, where installations increased 17% and net revenue per installation increased 35% compared to the prior year period. We do not recognize Software Platform Revenue from transactions with our studios.
The increase in Advertising Revenue was also due to improved AppDiscovery performance, where installations increased 17% and net revenue per installation increased 35% compared to the prior year period. We do not recognize Advertising Revenue from transactions with our studios.
The Software Platform and Apps segments provide a view into the organization of our business and generate revenue as follows: Software Platform Revenue We primarily generate Software Platform Revenue from fees paid by advertisers who use our Software Platform to grow and monetize their content. We are able to grow our Software Platform Revenue by improving our various software technologies.
The Advertising and Apps segments provide a view into the organization of our business and generate revenue as follows: Advertising Revenue We primarily generate Advertising Revenue from fees paid by advertisers who use our Advertising solutions to grow and monetize their content. We are able to grow our Advertising Revenue by improving our various technologies.
We expect our research and development expenses as a percentage of revenue to fluctuate period-over-period in the near term as we invest to enhance our Software Platform and improve our existing Apps and develop new Apps, and to decrease over the long term as we benefit from greater scale. General and administrative.
We expect our research and development expenses as a percentage of revenue to fluctuate period-over-period in the near term as we invest to enhance our Advertising solutions and improve our existing Apps and develop new Apps, and to decrease over the long term as we benefit from greater scale. General and administrative.
The vast majority of our IAP revenue flows through two app stores, Apple App Store and Google Play, which charge us a standard commission on IAPs. IAP Revenue represented 69% of total Apps Revenue for the twelve months ended December 31, 2023.
The vast majority of our IAP Revenue flows through two app stores, Apple App Store and Google Play, which charge us a standard commission on IAPs. IAP Revenue represented 68% of total Apps Revenue for the twelve months ended December 31, 2024.
In May 2023, Google announced new consent management platform ("CMP") requirements for ads served in the European Economic Area ("EEA") and UK, which will require, starting in January 2024, publishers using Google AdSense, Ad Manager, or AdMob to use a CMP that has been certified by Google and has integrated with the Interactive Advertising Bureau's ("IAB") Transparency and Consent Framework when serving ads to users in the EEA or the UK.
In May 2023, Google announced new consent management platform ("CMP") requirements for ads served in the European Economic Area ("EEA") and UK, which requires, as of January 2024, publishers using Google AdSense, Ad Manager, or AdMob to use a CMP that has been certified by Google and has integrated with the Interactive Advertising Bureau's ("IAB") Transparency and Consent Framework when serving ads to users in the EEA or the UK.
We are investing in direct sales, product development, education, and other capabilities to drive increased awareness and adoption of our Software Platform and Apps, which investments may impact our profitability in the near term as we seek further scale.
We are investing in direct sales, product development, education, and other capabilities to drive increased awareness and adoption of our Advertising solutions and Apps, which investments may impact our profitability in the near term as we seek further scale.
In addition, Software Platform Adjusted EBITDA for 2022 has been adjusted to exclude one-time publisher bonuses of $209.6 million for the year ended December 31, 2022.
In addition, Advertising Adjusted EBITDA for 2022 has been adjusted to exclude one-time publisher bonuses of $209.6 million for the year ended December 31, 2022.
We rely in part on Identifier for Advertisers ("IDFA") to provide us with data that helps our Software Platform better market and monetize Apps. In light of the IDFA and transparency changes, we made changes to our data collection practices.
We rely in part on Identifier for Advertisers ("IDFA") to provide us with data that helps our Advertising solutions better market and monetize Apps. In light of the IDFA and transparency changes, we made changes to our data collection practices.
Revenue from MAX is generated based on a percentage of client spend. As more developers move to in-app bidding monetization, we expect growth in the adoption of, and revenue from, MAX. Software Platform clients use Adjust's measurement and analytics marketing platform to better understand their users' journey while allowing marketers to make smarter decisions through measurement, attribution and fraud prevention.
Revenue from MAX is generated based on a percentage of client spend. As more advertising networks move to in-app real-time bidding, we expect growth in the adoption of, and revenue from, MAX. Advertising clients use Adjust's measurement and analytics marketing platform to better understand their users' journey while allowing marketers to make smarter decisions through measurement, attribution and fraud prevention.
Our Software Platform includes AppDiscovery, MAX, Adjust, and Wurl. Clients use AppDiscovery to automate, optimize, and manage their user acquisition investments. They set marketing and user growth goals, and AppDiscovery optimizes their ad spend in an effort to achieve their return on advertising spend targets and other marketing objectives. AppDiscovery comprises the vast majority of revenue from our Software Platform.
Our Advertising solutions include AppDiscovery, MAX, Adjust, and Wurl. Clients use AppDiscovery to automate, optimize, and manage their user acquisition investments. They set marketing and user growth goals, and AppDiscovery optimizes their ad spend in an effort to achieve their return on advertising spend targets and other marketing objectives. AppDiscovery comprises the vast majority of Advertising Revenue.
During the twelve months ended December 31, 2023, we had an average of 1.8 million Monthly Active Payers ("MAPs") across our portfolio of Apps. Over that period, we had an Average Revenue Per Monthly Active Payer ("ARPMAP") of $46. See “Key Metrics” below for additional information on how we calculate MAPs and ARPMAP.
During the twelve months ended December 31, 2024, we had an average of 1.6 million Monthly Active Payers ("MAPs") across our portfolio of Apps. Over that period, we had an Average Revenue Per Monthly Active Payer ("ARPMAP") of $51. See “Key Metrics” below for additional information on how we calculate MAPs and ARPMAP.
We believe that the global opportunity is significant and will continue to expand as developers and advertisers outside the United States adopt our Software Platform and advertise on our Apps. We also see opportunities to acquire new clients outside of mobile gaming, as the capabilities of our Software Platform are relevant to the broader advertising and mobile app ecosystems.
We believe that the global opportunity is significant and will continue to expand as developers and advertisers outside the United States adopt our Advertising solutions and advertise on our Apps. We also see opportunities to acquire new clients outside of mobile gaming, as the capabilities of our Advertising solutions are relevant to the broader advertising ecosystem.
Additionally, our effective tax rate can vary based on the amount of pre-tax income or loss. 49 Table of Contents Results of Operations In this section, we discuss the results of our operations for the year ended December 31, 2023 compared to the year ended December 31, 2022.
Additionally, our effective tax rate can vary based on the amount of pre-tax income or loss. Results of Operations In this section, we discuss the results of our operations for the year ended December 31, 2024 compared to the year ended December 31, 2023.
In the past, our clients have generally increased their usage of our Software Platform and Apps, and as a result, growth from existing clients has been a primary driver of our revenue growth.
In the past, our clients have generally increased their usage of our Advertising solutions and Apps, and as a result, growth from existing clients has been a primary driver of our revenue growth.
Our future capital requirements, however, will depend on many factors, including our growth rate; sales and marketing activities; timing and extent of spending to support our research and development efforts; capital expenditures to purchase hardware and software; and our continued need to invest in our IT infrastructure to support our growth.
Our future capital requirements will depend on many factors, including our revenue growth rate; sales and marketing activities; timing and extent of spending to support our research and development efforts; capital expenditures to purchase hardware and software; our continued need to invest in our IT infrastructure to support our growth; and the volume and timing of our stock repurchases.
Non-GAAP Financial Measures Adjusted EBITDA and Adjusted EBITDA Margin We define Adjusted EBITDA for a particular period as net income (loss) before interest expense and loss on settlement of debt, other income (expense), net (excluding certain recurring items), provision for (benefit from) income taxes, amortization, depreciation and write-offs and as further adjusted for stock-based compensation expense, acquisition-related expense and transaction bonus, publisher bonuses, MoPub acquisition transition services, restructuring costs, impairment and loss in connection with the sale of long-lived assets, non-operating foreign exchange (gain) losses, and change in the fair value of contingent consideration.
Non-GAAP Financial Measures Adjusted EBITDA and Adjusted EBITDA Margin We define Adjusted EBITDA for a particular period as net income (loss) before interest expense and loss on settlement of debt, other income, net (excluding certain recurring items), provision for (benefit from) income taxes, amortization, depreciation and write-offs and as further adjusted for stock-based compensation expense, acquisition-related expense and transaction bonus, publisher bonuses, MoPub acquisition transition services, restructuring costs, loss on disposal of long-lived assets, and non-operating foreign exchange (gain) losses.
Our IAA Revenue from Apps decreased by $136.4 million, or 23%, compared to the prior year period, due to a 45% decrease in price per advertising impression, partially offset by a 39% increase in the volume of advertising impressions. We do not recognize IAA Revenue from transactions with our studios.
Our IAA Revenue from Apps decreased by $136.4 million, or 23%, compared to the prior year period, due to a 45% decrease in price per advertising impression, partially offset by a 39% increase in the volume of advertising impressions.
MAPs for a particular time period longer than one month are the average MAPs for each month during that period. We estimate the number of MAPs by aggregating certain data from third-party attribution partners.
MAPs for a particular time period longer than one month are the average MAPs for each month during that period. We estimate the number of MAPs by aggregating certain data from third-party attribution partners. Average Revenue Per Monthly Active Payer ("ARPMAP").
Year Ended December 31, 2023 2022 2021 Monthly Active Payers (millions) 1.8 2.3 3.0 Average Revenue Per Monthly Active Payer $ 46 $ 43 $ 43 Our key metrics are not based on any standardized industry methodology and are not necessarily calculated in the same manner or comparable to similarly titled measures presented by other companies.
The following table shows our Monthly Active Payers and Average Revenue Per Monthly Active Payer for the years ended December 31, 2024, 2023, and 2022: Year Ended December 31, 2024 2023 2022 Monthly Active Payers (millions) 1.6 1.8 2.3 Average Revenue Per Monthly Active Payer $ 51 $ 46 $ 43 Our key metrics are not based on any standardized industry methodology and are not necessarily calculated in the same manner or comparable to similarly titled measures presented by other companies.
We plan to continue to invest in research and development to continue to enhance our Software Platform and to improve existing games and develop new games.
We plan to continue to invest in research and development to continue to enhance our Advertising solutions and to improve existing games and develop new games.
IAPs consist of virtual goods used to enhance gameplay, accelerate access to certain features or levels, and augment other mobile game progression opportunities for the user. IAPs drive more engagement and better economics from our Apps.
Our Apps are generally free-to-play mobile games and generate IAP Revenue through IAPs. IAPs consist of virtual goods used to enhance gameplay, accelerate access to certain features or levels, and augment other mobile game progression opportunities for the user. IAPs drive more engagement and better economics from our Apps.
We must continue to retain our existing clients and expand their spend with us over time to continue to grow our revenue, increase profitability and drive greater cash flow. Add new clients globally Our future success depends in part on our ability to acquire new clients.
We must continue to retain our existing clients and expand their spend with us over time to continue to grow our revenue, increase profitability and drive greater cash flow. Add new clients globally Our future success depends in part on our ability to acquire new clients. In 2024, 43% of our revenue was generated from outside of the United States.
We record uncertain tax positions on the basis of a two-step process in which determinations are made (i) whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (ii) for those tax positions that meet the more-likely-than-not recognition threshold, we recognize the largest amount of tax benefit that is more than 50% likely to be realized upon ultimate settlement with a tax authority.
We record uncertain tax positions on the basis of a two-step process in which determinations are made (i) whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (ii) for those tax positions that meet the more-likely-than-not recognition threshold, we recognize the largest amount of tax benefit that is more than 50% likely to be realized upon ultimate settlement with a tax authority. 55 Table of Contents We recognize interest and penalties related to unrecognized tax benefits in the income tax expense line in our consolidated statement of operations.
We generate Apps Revenue from IAPs made by the users within our Apps and from IAA generated from advertisers that 48 Table of Contents purchase advertising inventory from our diverse portfolio of Apps. IAA Revenue from our Apps was 31%, 33% and 31% of total Apps Revenue in 2023, 2022 and 2021, respectively.
We generate Apps Revenue from IAPs made by the users within our Apps and from IAA generated from advertisers that purchase advertising inventory from our diverse portfolio of Apps. IAA Revenue from our Apps was 32%, 31%, and 33% of total Apps Revenue in 2024, 2023, and 2022, respectively. Cost of Revenue and Operating Expenses Cost of revenue.
This increase was primary driven by $99.5 million due to an increase in interest rate and $4.3 million in loss on settlement of debt resulting from a debt refinancing transaction during the period. In 2022, interest expense and loss on settlement of debt increased by $68.7 million, or 67%, compared to 2021.
This increase was primary driven by $99.5 million due to an increase in interest rate and $4.3 million in loss on settlement of debt resulting from a debt refinancing transaction during the period.
Our definition may differ from the definitions used by other companies and therefore comparability may be limited. In addition, other companies may not publish Free Cash Flow or similar metrics. Thus, our Free Cash Flow should be considered in addition to, not as a substitute for, or in isolation from, measures prepared in accordance with GAAP.
In addition, other companies may not publish Free Cash Flow or similar metrics. Thus, our Free Cash Flow should be considered in addition to, not as a substitute for, or in isolation from, measures prepared in accordance with GAAP.
Finance Leases As of December 31, 2023, we have non-cancelable payments related to finance leases of certain networking equipment of $192.2 million, with $27.5 million payable within twelve months. For additional information, see Note 8 to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K.
As of December 31, 2024, we had non-cancelable payments related to leases of servers and networking equipment of $184.1 million, with $30.5 million payable within twelve months. For additional information, see Note 8 to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K.
The following table provides our Free Cash Flow for 2023, 2022, and 2021, and a reconciliation of net cash provided by operating activities to Free Cash Flow: Year Ended December 31, 2023 2022 2021 (in thousands, except percentages) Net cash provided by operating activities $ 1,061,510 $ 412,773 $ 361,851 Less: Purchase of property and equipment (4,246) (662) (1,390) Principal payments of finance leases (20,170) (24,083) (15,271) Free Cash Flow $ 1,037,094 $ 388,028 $ 345,190 Net cash used in investing activities $ (77,829) $ (1,371,468) $ (1,214,930) Net cash provided by (used in) financing activities $ (1,562,791) $ (526,848) $ 3,109,546 Factors Affecting Our Performance We believe that the future success of our business depends on many factors, including the factors described below.
The following table provides our Free Cash Flow for 2024, 2023, and 2022, and a reconciliation of net cash provided by operating activities to Free Cash Flow: Year Ended December 31, 2024 2023 2022 (in thousands) Net cash provided by operating activities $ 2,099,011 $ 1,061,510 $ 412,773 Less: Purchase of property and equipment (4,776) (4,246) (662) Principal payments of finance leases (20,875) (20,170) (24,083) Free Cash Flow $ 2,073,360 $ 1,037,094 $ 388,028 Net cash used in investing activities $ (106,754) $ (77,829) $ (1,371,468) Net cash used in financing activities $ (1,749,844) $ (1,562,791) $ (526,848) Factors Affecting Our Performance We believe that the future success of our business depends on many factors, including the factors described below.
Our IAA Revenue from Apps decreased $71.8 million, or 11%, compared to the prior year period, due to a 16% decrease 51 Table of Contents in price per advertising impression, partially offset by a 7% increase in the volume of advertising impressions. We do not recognize IAA Revenue from transactions with our studios.
Our IAA Revenue from Apps increased by $30.2 million, or 7%, compared to the prior year period, due to a 34% increase in the volume of advertising impressions, partially offset by a 20% decrease in price per advertising impression. We do not recognize IAA Revenue from transactions with our studios.
We generated net income of $356.7 million in 2023, net loss of $192.9 million in 2022, and net income of $35.3 million in 2021. We generated Adjusted EBITDA of $1.5 billion, $1.1 billion, and $726.8 million in 2023, 2022 and 2021, respectively.
We generated net income of $1.6 billion in 2024, net income of $356.7 million in 2023, and net loss of $192.9 million in 2022. We generated Adjusted EBITDA of $2.7 billion, $1.5 billion, and $1.1 billion in 2024, 2023, and 2022, respectively.
Interest expense and loss on settlement of debt Years Ended December 31, 2022 to 2023 % change 2021 to 2022 % change 2023 2022 2021 (in thousands, except percentages) Interest expense and loss on settlement of debt $ (275,665) $ (171,863) $ (103,170) 60 % 67 % Percentage of revenue (8) % (6) % (4) % In 2023, interest expense and loss on settlement of debt increased by $103.8 million, or 60%, compared to 2022.
Interest expense and loss on settlement of debt Year Ended December 31, 2023 to 2024 % change 2022 to 2023 % change 2024 2023 2022 (in thousands, except percentages) Interest expense and loss on settlement of debt $ (318,260) $ (275,665) $ (171,863) 15 % 60 % Percentage of revenue (7) % (8) % (6) % In 2024, interest expense and loss on settlement of debt increased by $42.6 million, or 15%, compared to 2023.
From the beginning of 2018 through end of 2022, we have invested nearly $4.0 billion in 29 strategic acquisitions and partnerships with mobile app developers and for technologies to enhance our Software Platform including the acquisition of MAX in 2018, Adjust in April 2021, MoPub in January 2022, and Wurl in April 2022.
From the beginning of 2018 through 2024, we have invested approximately $4.1 billion in 33 strategic acquisitions and partnerships with mobile app developers and for technologies or relationships to enhance our Advertising solutions, including the acquisition of MAX in 2018, Adjust in April 2021, MoPub in January 2022, and Wurl in April 2022.
The fees for IAPs are processed and collected by third-party distribution partners. We expect our cost of revenue to increase in absolute dollars over the long term as our business and revenue continue to grow. We also expect our cost of revenue as a percentage of revenue to fluctuate period-over-period. Sales and marketing .
We expect our cost of revenue to increase in absolute dollars over the long term as our business and revenue continue to grow. We also expect our cost of revenue as a percentage of revenue to fluctuate period-over-period. Sales and marketing .
We do not recognize Software Platform Revenue from transactions with our studios. For the twelve months ended December 31, 2022, our Apps Revenue decreased by $351.3 million, or 17%, from the prior year period.
We do not recognize Advertising Revenue from transactions with our studios. For the twelve months ended December 31, 2024, our Apps Revenue increased by $43.9 million, or 3%, from the prior year period.
Sales and marketing Years Ended December 31, 2022 to 2023 % change 2021 to 2022 % change 2023 2022 2021 (in thousands, except percentages) Sales and marketing $ 830,718 $ 919,550 $ 1,129,892 (10) % (19) % Percentage of revenue 25 % 33 % 40 % Sales and marketing expenses in 2023 decreased by $88.8 million, or 10%, compared to 2022 primarily due to a $126.5 million decrease in user acquisition costs and a $12.3 million decrease in professional services costs associated with the strategic review and optimization of our Apps segment, offset by a $47.5 million increase in personnel-related expense primarily due to an increase in stock-based compensation.
Sales and marketing expenses in 2023 decreased by $88.8 million, or 10%, compared to 2022 primarily due to a $126.5 million decrease in user acquisition costs and a $12.3 million decrease in professional services costs associated with the strategic review and optimization of our Apps segment, offset by a $47.5 million increase in personnel-related expense primarily due to an increase in stock-based compensation.
Research and development Years Ended December 31, 2022 to 2023 % change 2021 to 2022 % change 2023 2022 2021 (in thousands, except percentages) Research and development $ 592,386 $ 507,607 $ 366,402 17 % 39 % Percentage of revenue 18 % 18 % 13 % Research and development expenses in 2023 increased by $84.8 million, or 17%, compared to 2022.
Research and development Year Ended December 31, 2023 to 2024 % change 2022 to 2023 % change 2024 2023 2022 (in thousands, except percentages) Research and development $ 638,689 $ 592,386 $ 507,607 8 % 17 % Percentage of revenue 14 % 18 % 18 % Research and development expenses in 2024 increased by $46.3 million, or 8%, compared to 2023.
Cost of Revenue and Operating Expenses Cost of revenue. Cost of revenue consists primarily of third-party payment processing fees for distribution partners, amortization of acquired technology-related intangible assets, amortization of finance lease right-of-use assets related to certain servers and networking equipment and costs for third-party cloud service providers. Third-party payment processing fees relate to IAP Revenue.
Cost of revenue consists primarily of payment processing fees related to IAP Revenue, amortization of acquired technology-related intangible assets, amortization of finance lease right-of-use assets related to certain servers and networking equipment and data center costs related primarily to third-party cloud computing services. The fees for IAPs are processed and collected by third-party distribution partners.
Additionally, we have generated strong cash flows, with net cash provided by operating activities of $1.1 billion, $412.8 million, and $361.9 million in 2023, 2022, and 2021, respectively. Given our strong financial position, we have been able to reinvest in our expansion and growth and consummate strategic acquisitions and partnerships.
Additionally, we have generated strong cash flows, with net cash provided by operating activities of $2.1 billion, $1.1 billion, and $412.8 million in 2024, 2023, and 2022, respectively. Given our strong financial position, we have been able to reinvest in our expansion and growth, and repurchase and withhold shares of our Class A common stock.
Financing Activities Net cash used in financing activities was $1.6 billion for 2023, primarily consisting of $1.2 billion of common stock repurchases, payments for withholding taxes related to net share settlement of restricted stock units of $246.4 million, payments for the principal repayment of debt of $498.0 million net of $395.3 million proceeds from issuance of debt, deferred acquisition costs of $33.9 million, licensed asset obligation payments of $27.1 million, and principal payments for finance leases of $20.2 million, partially offset by $20.9 million in proceeds from exercise of stock awards.
Net cash used in financing activities was $1.6 billion for 2023, primarily consisting of $1.2 billion of stock repurchases, $498.0 million of principal repayments of debt, and $246.4 million of payments for withholding taxes related to net share settlement of equity awards, partially offset by $395.3 million of proceeds from issuance of debt.
For additional information on the Credit Agreement, see Note 9 to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K. Contractual Obligations Our material cash requirements include the following contractual obligations.
For additional information, see Note 9 to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K.
The decrease was primarily due to $12.7 million in acquisition-related costs in 2022 and a decrease of $6.7 million in professional services costs primarily associated with acquisition support. General and administrative expenses in 2022 increased by $22.9 million, or 14% compared to 2021.
The decrease was primarily due to $12.7 million in acquisition-related costs in 2022 and a decrease of $6.7 million in professional services costs primarily associated with acquisition support.
Provision for (benefit from) Income Taxes Years Ended December 31, 2022 to 2023 % change 2021 to 2022 % change 2023 2022 2021 (in thousands, except percentages) Provision for (benefit from) income taxes $ 23,859 $ (12,230) $ 10,973 (295) % (211) % Percentage of revenue 1 % — % — % In 2023, tax provision for income taxes increased by $36.1 million, or 295%, compared to 2022.
Provision for (benefit from) Income Taxes Year Ended December 31, 2023 to 2024 % change 2022 to 2023 % change 2024 2023 2022 (in thousands, except percentages) Provision for (benefit from) income taxes $ (3,771) $ 23,859 $ (12,230) (116) % (295) % Percentage of revenue — % 1 % — % In 2024, tax provision for income taxes decreased by $27.6 million, or 116%, compared to 2023.
Years Ended December 31, 2023 2022 2021 (in thousands) Revenue $ 3,283,087 $ 2,817,058 $ 2,793,104 Costs and expenses Cost of revenue 1,2 1,059,191 1,256,065 988,095 Sales and marketing 1,2 830,718 919,550 1,129,892 Research and development 1 592,386 507,607 366,402 General and administrative 1 152,585 181,627 158,699 Total costs and expenses 2,634,880 2,864,849 2,643,088 Income (loss) from operations 648,207 (47,791) 150,016 Other income (expense): Interest expense and loss on settlement of debt (275,665) (171,863) (103,170) Interest income (expense) and other, net 8,028 14,477 (535) Total other expense (267,637) (157,386) (103,705) Income (loss) before income taxes 380,570 (205,177) 46,311 Provision for (benefit from) income taxes 23,859 (12,230) 10,973 Net income (loss) $ 356,711 $ (192,947) $ 35,338 _______ 1 Includes stock-based compensation expense as follows: Years Ended December 31, 2023 2022 2021 (in thousands) Cost of revenue $ 5,229 $ 6,307 $ 2,335 Sales and marketing 79,879 41,533 15,224 Research and development 230,806 94,319 63,344 General and administrative 47,193 49,453 52,274 Total stock-based compensation $ 363,107 $ 191,612 $ 133,177 _______ 2 Includes amortization expense related to acquired intangibles as follows: Years Ended December 31, 2023 2022 2021 (in thousands) Cost of revenue $ 382,956 $ 448,462 $ 373,726 Sales and marketing 67,190 66,173 22,661 Total amortization expense related to acquired intangibles $ 450,146 $ 514,635 $ 396,387 50 Table of Contents The following table sets forth the components of our consolidated statements of operations for each of the periods presented as a percentage of revenue 1 : Years Ended December 31, 2023 2022 2021 (in thousands) Revenue 100 % 100 % 100 % Costs and expenses: Cost of revenue 32 % 45 % 35 % Sales and marketing 25 % 33 % 40 % Research and development 18 % 18 % 13 % General and administrative 5 % 6 % 6 % Total costs and expenses 80 % 102 % 95 % Income (loss) from operations 20 % (2) % 5 % Other income (expense): Interest expense and loss on settlement of debt (8) % (6) % (4) % Other income (expense), net 0 % 1 % 0 % Total other expense (8) % (6) % (4) % Income (loss) before income taxes 12 % (7) % 2 % Provision for (benefit from) income taxes 1 % — % — % Net income (loss) 11 % (7) % 1 % _______ 1 Totals of percentages of revenue may not foot due to rounding.
The following tables summarize our consolidated statement of operations: Year Ended December 31, 2024 2023 2022 (in thousands) Revenue $ 4,709,248 $ 3,283,087 $ 2,817,058 Costs and expenses Cost of revenue 1,2 1,166,806 1,059,191 1,256,065 Sales and marketing 1,2 849,209 830,718 919,550 Research and development 1 638,689 592,386 507,607 General and administrative 1 181,085 152,585 181,627 Total costs and expenses 2,835,789 2,634,880 2,864,849 Income (loss) from operations 1,873,459 648,207 (47,791) Other income (expense): Interest expense and loss on settlement of debt (318,260) (275,665) (171,863) Other income, net 20,806 8,028 14,477 Total other expense (297,454) (267,637) (157,386) Income (loss) before income taxes 1,576,005 380,570 (205,177) Provision for (benefit from) income taxes (3,771) 23,859 (12,230) Net income (loss) $ 1,579,776 $ 356,711 $ (192,947) _______ 1 Includes stock-based compensation expense as follows: Year Ended December 31, 2024 2023 2022 (in thousands) Cost of revenue $ 5,499 $ 5,229 $ 6,307 Sales and marketing 83,435 79,879 41,533 Research and development 239,902 230,806 94,319 General and administrative 47,619 47,193 49,453 Total stock-based compensation $ 376,455 $ 363,107 $ 191,612 _______ 2 Includes amortization expense related to acquired intangibles as follows: Year Ended December 31, 2024 2023 2022 (in thousands) Cost of revenue $ 338,380 $ 382,956 $ 448,462 Sales and marketing 74,248 67,190 66,173 Total amortization expense related to acquired intangibles $ 412,628 $ 450,146 $ 514,635 49 Table of Contents The following table sets forth the components of our consolidated statements of operations for each of the periods presented as a percentage of revenue 1 : Year Ended December 31, 2024 2023 2022 Revenue 100 % 100 % 100 % Costs and expenses: Cost of revenue 25 % 32 % 45 % Sales and marketing 18 % 25 % 33 % Research and development 14 % 18 % 18 % General and administrative 4 % 5 % 6 % Total costs and expenses 60 % 80 % 102 % Income (loss) from operations 40 % 20 % (2) % Other income (expense): Interest expense and loss on settlement of debt (7) % (8) % (6) % Other income, net — % — % 1 % Total other expense (6) % (8) % (6) % Income (loss) before income taxes 33 % 12 % (7) % Provision for (benefit from) income taxes — % 1 % — % Net income (loss) 34 % 11 % (7) % _______ 1 Totals of percentages of revenue may not foot due to rounding.
Apps Revenue Apps Revenue is generated when a user of one of our Apps makes an in-app purchase (“IAP") and when clients purchase the digital advertising inventory of our portfolio of Apps ("IAA").
Apps Revenue Apps Revenue is generated when a user of one of our Apps makes an in-app purchase (“IAP") and when clients purchase the digital advertising inventory of our portfolio of Apps ("IAA"). We are able to grow our Apps Revenue by adding more apps to our Apps portfolio and increasing engagement on our existing Apps.
We plan to continue to invest in sales and marketing to grow our Software Platform customer base and increase brand awareness. We also plan to continue to invest in new App launches to the extent we see opportunities for cost-effective growth. We expect sales and marketing expenses to fluctuate period-over-period as we launch new games.
We plan to continue to invest in sales and marketing to grow our Advertising customer base and increase brand awareness. We expect sales and marketing expenses to fluctuate period-over-period as we launch new games.
The following table provides our Adjusted EBITDA and Adjusted EBITDA margin for 2023, 2022, and 2021, and a reconciliation of net income (loss) to Adjusted EBITDA: Year Ended December 31, 2023 2022 2021 (in thousands, except percentages) Net income (loss) $ 356,711 $ (192,947) $ 35,338 Adjusted as follows: Interest expense and loss on settlement of debt 275,665 171,863 103,170 Other income (expense), net 1 (7,831) (18,647) (7,545) Provision for (benefit from) income taxes 23,859 (12,230) 10,973 Amortization, depreciation and write-offs 489,008 547,084 431,063 Impairment and loss in connection with sale of long-lived assets — 127,892 — Non-operating foreign exchange gain (1,224) (164) (1,537) Stock-based compensation 2 363,107 191,612 135,468 Acquisition-related expense and transaction bonus 1,047 21,279 16,887 Publisher bonuses 3 — 209,635 3,227 MoPub acquisition transition services 4 — 6,999 — Restructuring costs 2,316 10,834 — Change in the fair value of contingent consideration — — (230) Adjusted EBITDA $ 1,502,658 $ 1,063,210 $ 726,814 Net income (loss) margin 10.9% (6.8)% 1.3% Adjusted EBITDA margin 45.8% 37.7% 26.0% 1 Excludes recurring operational foreign exchange gains and losses and write-off investments included in Amortization, depreciation and write-offs. 2 The twelve months ended December 31, 2021 includes $2.3 million of bonus compensation settled in stock outside of the scope of ASC 718. 3 In association with the MoPub acquisition, we incurred certain costs to incentivize publishers to migrate to our MAX mediation solution, including existing publishers of MoPub as well as publishers on other competitor offerings.
Thus, our Adjusted EBITDA and Adjusted EBITDA margin should be considered in addition to, not as substitutes for, or in isolation from, measures prepared in accordance with GAAP. 45 Table of Contents The following table provides our Adjusted EBITDA and Adjusted EBITDA margin for 2024, 2023, and 2022, and a reconciliation of net income (loss) to Adjusted EBITDA: Year Ended December 31, 2024 2023 2022 (in thousands, except percentages) Net income (loss) $ 1,579,776 $ 356,711 $ (192,947) Adjusted as follows: Interest expense and loss on settlement of debt 318,260 275,665 171,863 Other income, net 1 (25,440) (7,831) (18,647) Provision for (benefit from) income taxes (3,771) 23,859 (12,230) Amortization, depreciation and write-offs 448,680 489,008 547,084 Loss on disposal of long-lived assets 1,646 — 127,892 Non-operating foreign exchange (gain) loss 291 (1,224) (164) Stock-based compensation 376,455 363,107 191,612 Acquisition-related expense and transaction bonus 885 1,047 21,279 Publisher bonuses 2 — — 209,635 MoPub acquisition transition services 3 — — 6,999 Restructuring costs 22,823 2,316 10,834 Adjusted EBITDA $ 2,719,605 $ 1,502,658 $ 1,063,210 Net income (loss) margin 33.5% 10.9% (6.8)% Adjusted EBITDA margin 57.8% 45.8% 37.7% 1 Excludes recurring operational foreign exchange gains and losses. 2 In association with the MoPub acquisition, we incurred certain costs to incentivize publishers to migrate to our MAX mediation solution, including existing publishers of MoPub as well as publishers on other competitor offerings.
In February 2022, Google announced its Privacy Sandbox initiative for Android, a multi-year effort expected to restrict tracking activity and limit advertisers' ability to collect app and user data across Android devices.
In February 2022, Google announced its Privacy Sandbox initiative for Android, a multi-year effort expected to restrict tracking activity and limit advertisers' ability to collect app and user data across Android devices. In January 2024, Google commenced rolling out a Chrome feature, called Tracking Protection, which limits 47 Table of Contents cross-site tracking.
The $14.7 million, or 5%, decrease in Apps Adjusted EBITDA for 2022 was primarily driven by a decrease in Apps Revenue of $351.3 million and a $73.0 million increase in professional services costs related to development of new apps by third parties, partially offset by a $317.6 million decrease in user acquisition costs, and an $88.4 million decrease in third-party payment processing fees paid associated with IAPs.
The $50.1 million, or 22%, increase in Apps Adjusted EBITDA for 2024 was primarily driven by an increase in Apps Revenue of $43.9 million, a $17.9 million decrease in user acquisition costs, and a $7.7 million decrease in third-party payment processing fees paid associated with IAPs, partially offset by an $18.2 million increase in professional services costs related to marketing, development and maintenance of apps by third parties.
Due to uncertainties in the timing of potential tax audits, the timing of the resolution of these positions is uncertain and we are unable to make a reasonable estimate of the timing of payments in individual years particularly beyond 12 months. As a result, this amount is not included in the table above.
Taxes As of December 31, 2024, we had recorded liabilities of $60.9 million related to uncertain tax positions. Due to uncertainties in the timing of potential tax audits, the timing of the resolution of these positions is uncertain and we are unable to make a reasonable estimate of the timing of payments in individual years particularly beyond 12 months.
Operating Leases As of December 31, 2023, we have non-cancellable commitments for primarily real estate leases with fixed lease payment obligations of $62.3 million, with $16.0 million payable within twelve months. For additional information, see Note 8 to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K.
As of December 31, 2024, we had non-cancellable payments related to leases of office facilities of $51.4 million, with $16.8 million payable within twelve months. For additional information, see Note 8 to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K.
While each of these factors presents significant opportunities for our business, they also pose important challenges that we must successfully address in order to continue to grow profitably while maintaining strong cash flow.
While each of these factors presents significant opportunities for our business, they also pose important challenges that we must successfully address in order to continue to grow profitably while maintaining strong cash flow. 46 Table of Contents Continue to invest in innovation We have made, and intend to continue to make, significant investments in our Advertising solutions to enhance their effectiveness and value proposition for our clients.
Other income (expense), net Years Ended December 31, 2022 to 2023 % change 2021 to 2022 % change 2023 2022 2021 (in thousands, except percentages) Other income (expense), net $ 8,028 $ 14,477 $ (535) (45) % ** Percentage of revenue — % 1 % — % ** Not meaningful In 2023, other income (expense), net decreased by $6.4 million compared to 2022.
Other income, net Year Ended December 31, 2023 to 2024 % change 2022 to 2023 % change 2024 2023 2022 (in thousands, except percentages) Other income, net $ 20,806 $ 8,028 $ 14,477 159 % (45) % Percentage of revenue — % — % 1 % In 2024, other income, net increased by $12.8 million compared to 2023.
General and administrative Years Ended December 31, 2022 to 2023 % change 2021 to 2022 % change 2023 2022 2021 (in thousands, except percentages) General and administrative $ 152,585 $ 181,627 $ 158,699 (16) % 14 % Percentage of revenue 5 % 6 % 6 % 52 Table of Contents General and administrative expenses in 2023 decreased by $29.0 million, or 16% compared to 2022.
General and administrative Year Ended December 31, 2023 to 2024 % change 2022 to 2023 % change 2024 2023 2022 (in thousands, except percentages) General and administrative $ 181,085 $ 152,585 $ 181,627 19 % (16) % Percentage of revenue 4 % 5 % 6 % General and administrative expenses in 2024 increased by $28.5 million, or 19% compared to 2023.
The increase in tax provision was primarily driven by an increase of $119.0 million due to the tax impact on the pre-tax income of $380.6 million in 2023 as compared to pre-tax loss of $205.2 million in 2022, offset by $65.7 million related to foreign rate differential and income inclusion, an increase of $16.5 million related to increase in Global Intangible Low-Taxed Income offset by an increase in foreign tax credit, an increase of $25.9 million of stock-based compensation benefit, and an increase of $13.3 million in the research and development credit.
The decrease in tax provision was primarily driven by an increase of $172.9 million of stock-based compensation benefit, a benefit of $123.2 million due to foreign income taxed at a different rate, an increase of $31.5 million in the research and development credit, offset by an increase of $251.0 million due to higher pre-tax book income of $1.6 billion in 2024 as compared to pre-tax book income of $380.6 million in 2023, and an increase of $34.7 million related to increase in Global Intangible Low-Taxed Income.
For 2023, our revenue grew 17% year-over-year from 2022, from $2.82 billion in 2022 to $3.28 billion in 2023. For 2022, our revenue grew 1% year-over-year from 2021, from $2.79 billion in 2021 to $2.82 billion in 2022.
For 2024, our revenue grew 43% year-over-year from 2023, from $3.3 billion in 2023 to $4.7 billion in 2024. For 2023, our revenue grew 17% year-over-year from 2022, from $2.8 billion in 2022 to $3.3 billion in 2023.
Net cash provided by operating activities was $412.8 million for 2022, primarily consisting of $192.9 million of net loss, adjusted for certain non-cash items, which included $547.1 million of amortization, depreciation and write-offs, $191.6 million of stock-based compensation expense, $127.9 million of impairment charges and losses on disposal of assets, $17.1 million of change in operating right of use asset, and $12.7 million of amortization of debt issuance costs and discount partially offset by a net increase in the operating assets and liabilities of $292.4 million.
Net cash provided by operating activities was $1.1 billion for 2023, primarily consisting of $356.7 million of net income, adjusted for certain non-cash items, such as $489.0 million of amortization, depreciation and write-offs, $363.1 million of stock- 53 Table of Contents based compensation expense, $28.0 million of impairment of non-marketable equity securities, $17.8 million of change in operating right of use asset, and $9.4 million of amortization of debt issuance costs and discount partially offset by a net increase in the operating assets and liabilities of $208.7 million.
We use Free Cash Flow to help manage the health of our business, prepare budgets and for capital allocation purposes. We believe Free Cash Flow provides useful supplemental information to help investors understand underlying trends in our business and our liquidity. Free cash flow has certain limitations, including that it does not reflect our future contractual commitments.
We believe Free Cash Flow provides useful supplemental information to help investors understand underlying trends in our business and our liquidity. Free cash flow has certain limitations, including that it does not reflect our future contractual commitments. Our definition may differ from the definitions used by other companies and therefore comparability may be limited.
Interest expense and loss on settlement of debt consists primarily of interest expense associated with our outstanding debt, including accretion of debt discount, and gains and losses of interest rate swap related to the variable interest payments associated with our outstanding debt. Other income (expense), net.
Interest expense and loss on settlement of debt consists primarily of interest expense associated with our outstanding debt, including accretion of debt discount and issuance costs. 48 Table of Contents Other income, net.
The following table summarizes our cash flows for the periods indicated: Years Ended December 31, 2023 2022 2021 (in thousands) Net cash provided by operating activities $ 1,061,510 $ 412,773 $ 361,851 Net cash used in investing activities $ (77,829) $ (1,371,468) $ (1,214,930) Net cash (used in) provided by financing activities $ (1,562,791) $ (526,848) $ 3,109,546 Operating Activities Net cash provided by operating activities was $1,061.5 million for 2023, primarily consisting of $356.7 million of net income, adjusted for certain non-cash items, which included $489.0 million of amortization, depreciation and write-offs, $363.1 54 Table of Contents million of stock-based compensation expense, $28.0 million of impairment of non-marketable equity securities, $17.8 million of change in operating right of use asset, and $9.4 million of amortization of debt issuance costs and discount partially offset by a net increase in the operating assets and liabilities of $208.7 million.
The following table summarizes our cash flows for the periods indicated: Year Ended December 31, 2024 2023 2022 (in thousands) Net cash provided by operating activities $ 2,099,011 $ 1,061,510 $ 412,773 Net cash used in investing activities $ (106,754) $ (77,829) $ (1,371,468) Net cash used in financing activities $ (1,749,844) $ (1,562,791) $ (526,848) Operating Activities Net cash provided by operating activities was $2.1 billion for 2024, primarily consisting of $1.6 billion of net income, adjusted for certain non-cash items, such as $448.7 million of amortization, depreciation and write-offs, $369.4 million of stock-based compensation expense, $28.4 million of loss on settlement of debt, $12.7 million of change in operating right of use asset, partially offset by a net decrease in the operating assets and liabilities of $349.5 million.
For the twelve months ended December 31, 2022, our IAP Revenue from Apps decreased by $279.5 million, or 19%, from the prior year period, primarily due to a 21% decrease in the volume of IAPs, partially offset by a 2% increase in price per IAP.
For the twelve months ended December 31, 2024, our IAP Revenue from Apps increased by $13.6 million, or 1%, from the prior year period, primarily due to a 3% increase in price per in-app purchase, partially offset by a 2% decrease in the volume of in-app purchases. We do not recognize IAA Revenue from transactions with our studios.
While we were not focused on acquisitions in 2023, we continue to explore strategic partnership opportunities related to our Software Platform, and the expansion of the markets it serves. We believe our future results of operations will be affected by our ability to continue to identify and execute such transactions that are accretive to our growth and profitability.
We believe our future results of operations will be affected by our ability to continue to identify and execute such strategic transactions that are accretive to our growth and profitability.
Comparison of Our Results of Operations for the Twelve Months Ended December 31, 2023, 2022 and 2021 Revenue Years Ended December 31, 2022 to 2023 % change 2021 to 2022 % change 2023 2022 2021 (in thousands, except percentages) Software Platform Revenue $ 1,841,762 $ 1,049,167 $ 673,952 76 % 56 % In-App Purchases Revenue 989,007 1,179,133 1,458,595 (16) % (19) % In-App Advertising Revenue 452,318 588,758 660,557 (23) % (11) % Apps Revenue 1,441,325 1,767,891 2,119,152 (18) % (17) % Total Revenue $ 3,283,087 $ 2,817,058 $ 2,793,104 17 % 1 % For the twelve months ended December 31, 2023, our Software Platform Revenue increased by $792.6 million, or 76%, from the prior year period primarily due to publisher bonuses of $209.6 million accounted for as a reduction to revenue in the prior year period.
Comparison of Our Results of Operations for the Twelve Months Ended December 31, 2024, 2023, and 2022 Revenue Year Ended December 31, 2023 to 2024 % change 2022 to 2023 % change 2024 2023 2022 (in thousands, except percentages) Advertising Revenue $ 3,224,058 $ 1,841,762 $ 1,049,167 75 % 76 % In-App Purchases Revenue 1,002,656 989,007 1,179,133 1 % (16) % In-App Advertising Revenue 482,534 452,318 588,758 7 % (23) % Total Apps Revenue 1,485,190 1,441,325 1,767,891 3 % (18) % Total Revenue $ 4,709,248 $ 3,283,087 $ 2,817,058 43 % 17 % For the twelve months ended December 31, 2024, our Advertising Revenue increased by $1.4 billion, or 75%, from the prior year period primarily due to improved AppDiscovery performance, where the volume of installations increased 50% and net revenue per installation increased 22% compared to the prior year period.
Investing Activities Net cash used in investing activities was $77.8 million for 2023, primarily consisting of $63.9 million related to acquisitions, $17.9 million in purchases of non-marketable investments and 4.2 million in purchase of property and equipment, partially offset by $8.3 million in proceeds from sale of long-lived assets.
Net cash used in investing activities was $77.8 million for 2023, primarily consisting of $63.9 million related to contingent considerations for prior acquisitions and capitalized software development costs, and $17.9 million in purchases of non-marketable investments.
Twelve Months Ended December 31, 2022 Compared to Twelve Months Ended December 31, 2021 The $351.1 million, or 77%, increase in Software Platform Adjusted EBITDA for 2022 was primarily driven by an increase in Software Platform revenue of $375.2 million, partially offset by an increase of $123.9 million in expenses associated with our network infrastructure and an increase of $74.3 million in personnel-related expenses related to an increase in headcount primarily due to the acquisitions of Adjust and Wurl.
Twelve Months Ended December 31, 2023 Compared to Twelve Months Ended December 31, 2022 The $467.3 million, or 58%, increase in Advertising Adjusted EBITDA for 2023 was primarily driven by an increase in Advertising Revenue of $792.6 million, partially offset by an increase of $49.5 million in expenses associated with our network infrastructure and an increase of $46.6 million in personnel-related expenses related to an increase in stock-based compensation expense as a result of an increase in headcount.