GarantieTrack

GarantieTrack tracks product warranties and reminds you before they expire. It is the most complete app in my catalogue — and the only one with a finished Google Play Billing integration.If you have ever tried to wire up RevenueCat, you know the code is the small part. This gives you a working reference: entitlement handling, purchase, restore, subscription change listener, and a paywall that pulls localised prices from the Play Store instead of hardcoding them.WHAT YOU GET- Complete Expo app, ~6,000 lines of TypeScript- lib/billing.tsx — reusable RevenueCat module, drop it into any Expo project- lib/notifications.ts — scheduled local reminders, no push server needed- lib/pdf.ts — real PDF generation via expo-print, with embedded receipt photo- lib/backup.ts — file-based export and import with merge instead of overwrite- lib/photos.ts — receipt capture with permanent storage (not the cache directory)- SETUP-PLAY-BILLING.md — step-by-step Play Console and RevenueCat setup- STORE-LISTING.md — store copy, privacy policy and Data Safety answersWHY THE BILLING MODULE IS THE POINTPremium status is never stored locally. It is read from RevenueCat on every launch,so it cannot be faked and refunds propagate automatically. The module is written tobe app-neutral — change one constant and it works in your own project.WHAT IS NOT INCLUDED- You need your own RevenueCat account and Play Console products- UI text is German- Not published to Google Play

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