Deep-dive guides for mobile subscription developers
Developer Handbooks
Comprehensive, book-length handbooks covering in-app purchases, subscriptions, and the infrastructure behind them. Read online or download as PDF.
Android Monetization Starts Here
Two expert hubs. Two implementation paths.
The RevenueCat Android SDK Handbook
In-app subscriptions without the boilerplate. Covers the same 18 topics as the Google Play handbook, solved with RevenueCat SDK — less code, managed backend, and one boolean for entitlement checks.
The Google Play Billing Handbook
The complete manual for building in-app purchases from scratch — BillingClient, Developer API, RTDNs, subscription state machine, and every edge case in between.
Building and monetizing your first iOS app
Go from an idea to a monetized app on the App Store.
Build, monetize, and ship an iOS app with Replit
A step-by-step guide for first-time builders using Replit and RevenueCat. Build your app, choose a monetization model, add a paywall, test purchases, configure App Store Connect, and submit your app for review.
