This guide covers ironsource alternatives for mobile developers and publishers — with practical, technical detail you can apply today.
ironSource Alternatives: 6 Best Ad Mediation & Monetization Platforms for Mobile Developers (2026)
Why Developers Are Looking for ironSource Alternatives
ironSource was one of the most widely adopted ad mediation platforms in mobile gaming. Its LevelPlay mediation platform, combined with its offerwall and ad network, made it a default choice for thousands of developers.
In November 2022, Unity acquired ironSource in a ~$4.4 billion all-stock deal. The ironSource brand is now being absorbed into “Unity Grow.” The ironsrc.com domain redirects to is.com, and the product portfolio has been merged with Unity’s existing offerings — Unity Ads, Tapjoy’s offerwall, Supersonic publishing, and Aura device-level distribution.
This consolidation has created concerns for developers:
- Brand confusion. ironSource’s legacy documentation, support channels, and branding are being merged into Unity’s ecosystem.
- Roadmap uncertainty. ironSource is now one product among many in a large public company’s portfolio.
- No Flutter or React Native support. ironSource’s SDK supports Android, iOS, and Unity only.
- Platform lock-in concerns. Developers using Unity for their game engine may want to keep monetization independent.
None of this means ironSource is a bad platform. It remains a capable mediation solution. But the acquisition has changed the calculus. This guide compares six alternatives.
What to Look For in an Ad Mediation & Monetization Platform
- Ad mediation. Does the platform support unified auction / in-app bidding across multiple ad networks?
- Rewarded monetization. Does the platform offer an offerwall or rewarded engagement layer?
- SDK breadth. Native SDKs for all your target platforms — Android, iOS, Unity, Flutter, React Native, Web?
- Server-side reward validation. Conversions verified through signed S2S callbacks?
- Analytics and reporting. Real-time dashboards with granular data?
- Fraud protection. Device fingerprinting, behavioral analysis, proxy detection?
- Self-serve access. Sign up and integrate without a sales call?
- Platform independence. Independent, or owned by a larger company?
Platform #1: Perkox
Website: perkox.com
Type: Rewarded monetization infrastructure + mediation
Independence: Independent
Overview
Perkox is a rewarded monetization infrastructure platform that combines offerwall monetization with ad mediation in a single stack. It provides the full suite — SDKs, tracking engine, reward validation, analytics, and fraud monitoring — with native support for all six major mobile platforms.
This is the only platform in this comparison that offers native Flutter and React Native SDKs alongside Android, iOS, Unity, and Web.
SDK Support
| Platform | Support |
|---|---|
| Android | Yes |
| iOS | Yes |
| Unity | Yes |
| Flutter | Yes |
| React Native | Yes |
| Web | Yes |
Key Features
- Ad mediation — unified auction and in-app bidding integration
- Rewarded offerwall — opt-in rewarded marketplace with CPA/CPI campaigns
- Server-side reward validation — signed S2S callbacks, HMAC-signed, time-bound
- Tracking engine — first-party click tracking, conversion tracking, postbacks
- Real-time analytics — granular reporting by country, offer, and user segment
- Fraud monitoring — device fingerprinting, behavioral analysis, proxy detection
- White-label infrastructure — enterprise-ready, brandable offerwall
- Self-serve access — sign up here
Best For
Cross-platform developers who need Flutter or React Native support. Teams that want both mediation and rewarded monetization in one platform. Developers who value independence from large public companies.
Limitations
Newer platform with fewer public case studies than established competitors. Brand awareness is still growing.
Platform #2: AppLovin (MAX)
Website: applovin.com
Type: Ad mediation + user acquisition platform
Independence: Public company (NASDAQ: APP)
Overview
AppLovin’s MAX (Mobile App eXchange) is the largest independent ad mediation platform by market share. MAX provides unified auction / in-app bidding across 25+ SDK networks. AppLovin also operates AppDiscovery (user acquisition) and owns several game studios.
SDK Support
| Platform | Support |
|---|---|
| Android | Yes |
| iOS | Yes |
| Unity | Yes |
| Flutter | No |
| React Native | No |
| Web | No |
Key Features
- MAX mediation — unified auction with in-app bidding across 25+ networks
- AppDiscovery — AI-powered user acquisition platform
- Ad Review — centralized creative review and approval
- Extensive network support — broadest ad network integration in the market
Best For
Large studios that need enterprise-grade mediation with the broadest ad network support. Teams running complex waterfall + bidding hybrids.
Limitations
No Flutter or React Native SDK. No native offerwall. Limited to ad mediation; no white-label infrastructure.
Platform #3: Google AdMob
Website: admob.google.com
Type: Ad mediation + ad network
Independence: Owned by Google (NASDAQ: GOOGL)
Overview
Google AdMob is the default ad mediation platform for most mobile developers. AdMob mediation supports cascading waterfalls and in-app bidding across multiple ad networks. AdMob’s biggest advantage is its fill rate — as Google’s ad network, it has access to the largest pool of advertiser demand.
SDK Support
| Platform | Support |
|---|---|
| Android | Yes (native Firebase) |
| iOS | Yes |
| Unity | Yes (via Firebase) |
| Flutter | Yes (via Firebase plugins) |
| React Native | Limited |
| Web | No |
Key Features
- AdMob mediation — waterfall + bidding across multiple networks
- Google advertiser demand — largest fill rate of any platform
- Firebase integration — analytics, crash reporting, remote config
- Flutter support — via Firebase Flutter plugins
- Free to use — no platform fees for mediation
Best For
Developers already invested in the Google/Firebase ecosystem. Teams that prioritize fill rate over specialized rewarded monetization features. Indie developers who want a free mediation layer.
Limitations
No native offerwall. Google owns the platform — account suspensions are a known pain point. Limited React Native support. No white-label infrastructure.
Platform #4: Digital Turbine (formerly Fyber)
Website: digitalturbine.com
Type: Mobile growth and monetization platform
Independence: Public company (NASDAQ: APPS)
Overview
Digital Turbine acquired Fyber in 2020-2021, rebranding as DT FairBid (mediation) and DT Offer Wall (rewarded monetization). DT’s unique advantage is its on-device distribution — DT Ignite reaches 1B+ devices through OEM and carrier partnerships.
SDK Support
| Platform | Support |
|---|---|
| Android | Yes (4.4+) |
| iOS | Yes (13+) |
| Unity | Yes (2021+) |
| Flutter | No |
| React Native | No |
| Web | Yes (Web Offer Wall) |
Key Features
- DT FairBid — hybrid mediation with in-app bidding
- DT Offer Wall — rewarded monetization
- DT Ignite — on-device / OEM distribution (1B+ devices)
- DT iQ — AI-powered optimization engine
- Published case studies (15% incremental revenue for Pocket FM)
Best For
Enterprise developers needing on-device distribution. Teams wanting a broad platform beyond just mediation.
Limitations
No Flutter or React Native SDK. Enterprise sales model — no self-serve. Website appears mid-migration.
Platform #5: Chartboost
Website: chartboost.com
Type: Ad mediation + user acquisition
Independence: Independent
Overview
Chartboost is an ad mediation and user acquisition platform focused on mobile games. Its Helium mediation platform provides in-app bidding and unified auction capabilities. Known for game-focused ad formats and a developer-friendly approach.
SDK Support
| Platform | Support |
|---|---|
| Android | Yes |
| iOS | Yes |
| Unity | Yes |
| Flutter | No |
| React Native | No |
| Web | No |
Key Features
- Helium mediation — unified auction with in-app bidding
- Game-focused ad formats — playable ads, rewarded video, interstitial
- Direct advertiser deals — marketplace for direct ad deals
- Developer-friendly — accessible without enterprise complexity
Best For
Indie game developers who want a focused mediation platform. Teams that prioritize game-specific ad formats. Developers who want direct advertiser relationships.
Limitations
No Flutter/React Native SDK. No native offerwall. Smaller scale than AppLovin or AdMob. Limited to gaming.
Platform #6: Unity LevelPlay (ironSource)
Website: unity.com/products/levelplay
Type: Ad mediation (part of Unity ecosystem)
Independence: Owned by Unity (NYSE: U)
Unity LevelPlay (formerly ironSource LevelPlay) is included as a baseline. It remains strong for Unity developers with native Editor integration, AB testing, and combined ironSource + Tapjoy + Unity Ads demand. However, it’s now part of a large corporate ecosystem with no Flutter/React Native support.
Comparison Matrix
| Feature | Perkox | AppLovin MAX | AdMob | DT | Chartboost | Unity LevelPlay |
|---|---|---|---|---|---|---|
| Ad Mediation | Yes | Yes | Yes | Yes | Yes | Yes |
| Offerwall | Yes | No | No | Yes | No | Yes (Tapjoy) |
| In-App Bidding | Yes | Yes | Yes | Yes | Yes | Yes |
| Flutter SDK | Yes | No | Yes (Firebase) | No | No | No |
| React Native SDK | Yes | No | Limited | No | No | No |
| Server-side Validation | Yes | N/A | N/A | Yes | N/A | Yes |
| Self-Serve | Yes | Yes | Yes | No | Yes | Yes |
| Independent | Yes | No | No (Google) | No | Yes | No (Unity) |
| White-Label | Yes | No | No | No | No | No |
How to Choose
Choose Perkox if: You’re building with Flutter or React Native. You need both mediation and rewarded monetization. You want an independent platform with self-serve access. Get started →
Choose AppLovin MAX if: You need enterprise-grade mediation with the broadest ad network support (25+ networks). You’re a large studio with dedicated monetization teams.
Choose Google AdMob if: You’re invested in Firebase. You prioritize fill rate. You want a free mediation layer. You’re building with Flutter (via Firebase).
Choose Digital Turbine if: You need on-device / OEM distribution. You want a broad platform. You’re an enterprise.
Choose Chartboost if: You’re an indie game developer wanting a focused, developer-friendly platform. You want direct advertiser relationships.
Choose Unity LevelPlay if: You’re a Unity developer wanting Editor integration. You’re deeply invested in the Unity ecosystem.
Frequently Asked Questions
Why are developers looking for ironSource alternatives?
ironSource was acquired by Unity in 2022. Some developers prefer independent platforms, need SDK support for Flutter/React Native, or want a combined mediation + offerwall stack.
Is ironSource LevelPlay still a good platform?
Yes, it remains a capable mediation platform. The question is whether it fits your needs — particularly for Flutter/React Native support or platform independence.
What’s the difference between mediation and rewarded monetization?
Mediation manages multiple ad networks through one SDK for CPM optimization. Rewarded monetization generates CPA/CPI revenue through user action completions. Some platforms offer both.
Does Perkox replace AdMob or AppLovin MAX?
No. Perkox complements your existing mediation stack. Run AdMob/MAX for standard ads and Perkox for rewarded monetization. They serve different user segments.
Which platform has the best eCPM?
We don’t publish eCPM comparisons because eCPM varies by geography, genre, and cohort. Focus on integration ease, mediation support, SDK breadth, and fraud protection.
Do I need Flutter or React Native support?
If you’re building with Flutter (1M+ apps) or React Native (3M+ developers), you need a platform with native SDKs. Perkox is the only platform offering native Flutter and React Native SDKs.
Conclusion
ironSource is now part of Unity. If independence, Flutter/React Native support, or a combined mediation + offerwall stack matters to you, alternatives are worth evaluating. SDK support is the biggest differentiator — Perkox is the only platform with native SDKs for all six platforms. Choose based on your stack, not on brand recognition.
Perkox provides rewarded monetization infrastructure — SDKs, tracking, analytics, and reward validation — for mobile apps and games across Android, iOS, Unity, Flutter, and React Native. Read the documentation →