An in-app purchase (IAP) refers to the buying of virtual goods, services, or additional features within a mobile application. This monetization strategy is common in freemium apps, where the initial download is free, but users can make purchases within the app.
In-app purchases can include upgrades, premium content, virtual currency, or other items that enhance the user experience or provide added functionality.
Buying virtual gems, coins, or a premium subscription within a gaming app to unlock new levels or features.