In-App Ads Captured 400 Billion Market in 2025
Software development kits now control the primary signals for mobile advertising as major platforms shift their data strategies.
Updated on Oct. 6, 2026 in Advertising
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The global in-app advertising market reached $400 billion in 2025, marking a 10.8% year-on-year increase. With users spending over 90% of their mobile time in apps, these environments have become the critical venue for targeting as traditional web-based cookies remain ineffective.
Why it matters
As tech giants like Google move away from legacy tracking tools like Privacy Sandbox, independent software development kits (SDKs) have become essential for publishers to maintain ad revenue. These tools enable the first-party data collection necessary to offset rising AI inference costs.
The in-app market generated $400 billion in 2025, growing 10.8% over the prior year, with independent SDKs now reaching 44% of Android and 31% of iOS downloads. Despite this growth, publishers typically retain only $50-55 of every $100 spent by advertisers.
The players
AppLovin
A mobile advertising technology company that provides software development kits and a platform for app monetization and user acquisition.
A global technology conglomerate that dominates online advertising through its search engine, mobile OS, and browser-based ad platforms.
Apple
A consumer electronics and software company that enforces mobile privacy standards through its App Tracking Transparency framework.
The details
Independent adtech platforms function by embedding SDKs within apps to collect first-party signals, effectively replacing the targeting capabilities once provided by third-party cookies. These tools allow publishers to reach users despite Apple's 35% ATT opt-in rate, which limits tracking across different apps. By securing this footprint, companies like AppLovin, which generated $5.48 billion in ad revenue in 2025, can maintain effective ad inventory monetization.
Timeline
2017: The in-app advertising market reached its previous baseline level.
2023: This year served as the baseline for measuring the 99% reduction in AI inference costs.
2025: The in-app advertising market reached $400 billion.
October 2025: Google officially retired its Privacy Sandbox.
Market Landscape
The rise of independent SDKs follows the pattern set by Apple's App Tracking Transparency framework, which forced the industry to find new ways to verify ad efficacy. This shift highlights a broader migration away from centralized browser-based standards toward fragmented, app-native tracking.
Operators should evaluate their dependency on legacy ad tracking tools and consider adopting independent SDKs to maintain revenue as major platforms restrict data access. Businesses must factor in that while AI inference costs have dropped 99% since 2023, high ad revenue remains crucial to funding these services.
The takeaway
The move toward in-app ad targeting is not just a trend but a requirement for those who need to subsidize AI-driven products. Monitor your adtech partner's SDK reach percentage to ensure they retain visibility as platform-level privacy controls continue to tighten.
Further reading
For more on industry shifts, see our coverage of Advertising.
Source note: This article includes information reported by Economic Times.
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