Mobile App Integrations (Clerk, Firebase/Supabase, RevenueCat) – Fixed Budget $300

I need an experienced developer to integrate three critical services into an existing React Native/Expo app. The app’s frontend and offline logic are already built—this is purely backend/service integration. Must finish in 7 days.

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**TASKS BREAKDOWN**

1. CLERK AUTHENTICATION
- Add email/password + Google sign-in.
- Sync Clerk user sessions with the app’s local data.

2. FIREBASE/SUPABASE SETUP
- Connect to Firebase Firestore or Supabase.
- Implement automatic offline-to-online data sync.
- Set basic security rules for data access.

3. REVENUECAT & FREEMIUM MODEL
- Integrate monthly/annual subscriptions via RevenueCat.
- Restrict free users (e.g., limit daily achievements).
- Unlock full features for paid users (RevenueCat entitlements).

4. TESTING
- Test on iOS + Android.
- Verify offline sync, auth flows, and subscription upgrades.

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**REQUIREMENTS**
- PROVEN EXPERIENCE with Clerk, Firebase/Supabase, and RevenueCat (share examples).
- Strong React Native/Expo skills (JavaScript/TypeScript).
- Daily communication + progress updates.

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**HOW TO APPLY**
Reply with:
1. Confirmation you can finish in 7 days.
2. Links to 1-2 apps you’ve built with similar integrations.
3. A short explanation of your approach to offline data sync with Firebase/Supabase.

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**NOTES**
- Clean, maintainable code is a MUST.
- Do NOT apply if $300 exceeds your rate.