In‑App Purchase

A transaction conducted within a mobile application or software product, typically for digital goods, virtual currency, premium features, or subscription upgrades. In‑app purchases are the dominant monetization model for mobile games and many freemium apps. Their effectiveness depends heavily on timing and framing: purchases prompted at moments of frustration or achievement convert differently, and gain‑framed offers (bonuses, gifts) outperform loss‑framed demands. The architecture of the in‑app purchase flow — when it appears, what it says, how it is framed — is a concentrated test of upsell design principles.

Example: Candy Crush Saga’s in‑app purchase prompt for extra moves is framed as an extended bonus after a free gift, not as a payment to continue playing.