+An **In-App Purchase** (IAP) allows users to acquire [Digital Goods](/wiki/digital_goods) or services directly within a [Mobile App](/wiki/mobile_app). These transactions often unlock premium content, features, or virtual items, serving as a primary [Monetization](/wiki/monetization) strategy for many applications.
+## See also
+- [Monetization](/wiki/monetization)
+- [Subscription](/wiki/subscription)
+- [Freemium](/wiki/freemium)
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