AppLovin: What It Is, SDK for Advertising and Monetization

What is AppLovin?

AppLovin is a public company (NASDAQ: APP) providing a programmatic advertising platform for mobile applications. Founded in 2012 by Adam Foroughi and Andrew Karvunis, headquartered in Palo Alto, California. The platform reaches over 1.5 billion devices monthly and serves both advertisers and app publishers.

AppLovin’s main products include the SDK for developers, the MAX mediation platform, the Ad Exchange advertising exchange, and tools for analytics and revenue optimization. The AppLovin ecosystem encompasses publishers, advertisers and consumers, connecting them through a unified programmatic infrastructure.

According to Sensor Tower 2025, apps using the AppLovin SDK generate on average 25% more revenue compared to isolated ad networks, thanks to in-app bidding technology and real-time impression optimization.

AppLovin also owns its own game development studios — PeopleFun, Belka Games, Firecraft Studios, Clipwire Games — which gives the platform a unique advantage: it is simultaneously both an ad network and a publisher. AppLovin uses data from its own games to train algorithms and improve targeting for all publishers on the platform. Data from over 200 proprietary games allows AppLovin to more accurately predict user behavior and optimize auction bids in MAX to maximize app developer revenue.

How AppLovin Monetization Works

Monetization through AppLovin is built on two mechanisms: direct ad serving through the SDK and mediation through the MAX platform. The developer integrates a single SDK that loads ad creatives from the AppLovin network and also passes impressions to MAX for a competitive auction.

In-app bidding

In-app bidding is a key technology in the AppLovin ecosystem. For each ad impression, MAX sends a request to all connected ad networks, and each network returns a bid in real time. The winner gets the impression. The auction is transparent: the developer sees the winning bid and can analyze each network’s performance.

Waterfall vs Auction

Traditional waterfall sets fixed network priorities, leading to revenue loss when a high-priority network pays less. AppLovin’s in-app auction eliminates this problem: all networks compete simultaneously, and the developer is guaranteed to receive the highest bid for each impression. According to internal AppLovin 2025 tests, switching from waterfall to in-app bidding increases eCPM by 15–30%.

The monetization process works as follows: the user opens the app, the AppLovin SDK sends a request to the server, the server forwards the request to MAX, MAX runs an auction among all connected ad networks, the winning network returns a creative, the SDK displays the ad to the user and records the impression event. The entire cycle takes less than 200 milliseconds, which is imperceptible to the user and does not affect app performance. Creative caching on the SDK side allows ads to be shown instantly even with an unstable internet connection.

// AppLovin SDK Initialization
class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        // Creating SDK Configuration
        val sdkConfig = MaxInitConfigurationBuilder()
            .setSdkKey("YOUR_SDK_KEY")
            .build()

        // MAX SDK Initialization
        MaxSdk.initialize(sdkConfig, MaxSdkConfig())
    }
}

Ad Formats in AppLovin SDK

The AppLovin SDK supports four main ad formats, each optimized for specific use cases in mobile applications.

Banners

Banners are a standard rectangular format placed at the top or bottom of the screen. AppLovin supports adaptive banners that automatically adjust to the device’s screen width. Banners provide steady, albeit not the highest, eCPM but do not interfere with the user’s main interaction with the app.

Interstitial

Interstitials are full-screen ads displayed at natural pauses between game levels or app sections. AppLovin recommends showing interstitials no more than once every 30 seconds and not covering key moments of user interaction with the interface.

Rewarded Video

Rewarded video is a format where users voluntarily watch a video to the end and receive an in-game reward (coins, lives, bonuses). According to AppLovin 2025, rewarded video shows the highest eCPM among all formats and the highest user retention, since the user chooses when to watch. The developer configures the reward type and amount in the MAX dashboard, and the SDK automatically tracks video completion and triggers a callback for reward grant without additional code.

Native Ads

Native ads are ad blocks visually embedded into app content: feeds, lists, or cards. AppLovin native ads support custom layouts, allowing the developer to fully control the ad’s appearance. This format delivers the highest engagement due to its integration into the app context.

For each format, AppLovin provides flexible settings: auto-refresh for banners (30–60 seconds), load timeout for interstitials (default 10 seconds), frequency capping, and custom placeholders. The developer can configure each format’s behavior for different app screens separately via placement IDs in the MAX dashboard. It is recommended to use rewarded video as the primary revenue format, banners for additional passive income, and interstitials at natural pauses between user activities for minimal impact on user experience.

Integrating AppLovin SDK

Integrating the AppLovin SDK into an Android app is done via Gradle and requires minimal code changes. The SDK supports Java and Kotlin; all new projects are recommended to be developed in Kotlin.

// Adding to build.gradle (app level)
dependencies {
    implementation("com.applovin:applovin-sdk:12.6.0")
    implementation("com.applovin.mediation:google-adapter:23.1.0.0")
}

// Loading Rewarded Ads
private fun loadRewardedAd() {
    val rewardedAd = MaxRewardedAd
        .getInstance("YOUR_AD_UNIT_ID")
    rewardedAd.setListener(object : MaxRewardedAdListener {
        override fun onAdLoaded(adUnitId: String?) {
            println("Rewarded ad loaded: $adUnitId")
        }
        override fun onAdDisplayed(adUnitId: String?) {
            println("Ad displayed")
        }
    })
    rewardedAd.loadAd()
}

To display ads after loading, simply call rewardedAd.showAd() from the desired location in the code. The SDK automatically handles activity lifecycle, creative loading, and display without additional configuration. AppLovin ensures compatibility with AndroidX and supports Jetpack Compose through a separate adapter.

AppLovin also provides SDKs for iOS in Swift and Objective-C, as well as plugins for Unity, React Native and Flutter. The AppLovin React Native adapter supports TypeScript and allows ad integration without writing native code, speeding up development for React Native projects. The Flutter adapter uses MethodChannels to communicate with the native SDK and supports all ad formats. A Unity package is available from the Asset Store with ready-made prefabs for banners and rewarded video, which is especially convenient for game developers unfamiliar with native development.

MAX Mediation Platform

MAX (Marketplace and Ad Exchange) is AppLovin’s flagship ad mediation product. MAX aggregates demand from over 20 ad networks, including Google AdMob, Meta Audience Network, TikTok and Vungle, and runs an in-app auction for each impression, selecting the network with the highest bid.

MAX’s key advantage over competitors is full auction transparency. The developer can see the winning bid, network name, and revenue distribution in real time via a web dashboard. This allows identifying underperforming networks and disabling them, focusing on the most effective channels.

According to a PocketGamer.biz 2025 report, publishers of Average Games increased revenue by 40% after switching to MAX, using a combination of in-app bidding and waterfall for networks that do not support bidding. MAX is available for Android, iOS and Unity, making it a universal solution for cross-platform projects.

MAX provides several key tools for developers: A/B testing of mediation configurations, automatic settings backup, real-time monitoring, and an API for programmatic management. Built-in MAX analytics shows eCPM, ARPDAU, retention and LTV for each ad unit and each ad network separately. This allows developers to make data-driven decisions: which networks to disable, which countries to configure separately, and which formats deliver maximum revenue. MAX also supports custom ad networks through SDK adapters, allowing any network to be connected even if it is not in the standard list of supported partners.