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Fiverr Pro
English
$
USD
I will fix stripe webhook errors and revenuecat in app purchase subscriptions
FELIX
About this gig
Customer paid. Money landed in Stripe. Account still says Free. Or a subscriber tapped Restore Purchase and lost everything. Broken payments are the most expensive bug an AI built app can have, because it is silently costing you customers right now.
I connect the payment layer your prompt builder skipped.
WHAT I FIX
Stripe webhooks: signing secret, event handling, 400 and 401 signature errors
Checkout, subscriptions, free trials, upgrades, cancellations, customer portal
The Supabase Edge Function or Vercel serverless handler that is supposed to update the user row and does not
RevenueCat setup, entitlements, "offerings are empty", sandbox testing
Apple StoreKit and Google Play Billing in app purchases inside Expo
Restore purchases, server side receipt validation, refund handling
WHY ME
I run a real test transaction and send you video proof of the upgrade firing
Retries and idempotency done properly, so you never double charge a human being
Works on Vercel, Supabase, Netlify, Railway and Expo EAS
24 hour delivery
Tell me which builder you used and where the money stops moving. Diagnosis is free.
Get to know FELIX
FELIX
React Native Supabase Developer Expo builds, RLS, payments, App Store deploy
- FromFrance
- Member sinceAug 2026
- Avg. response time1 hour
Languages
English, Spanish
I fix apps that AI built and then abandoned.
Lovable, Bolt.new, v0, Replit, CatDoes and Cursor are brilliant at generating screens and genuinely terrible at everything behind them. Supabase RLS, Expo builds, Stripe webhooks, App Store review. That is the part where founders get stuck for three days and I get unstuck in one.
React Native, Expo, TypeScript, Supabase, Postgres, Stripe, RevenueCat, Vercel.
Send me the error message, not an apology for it. I have seen worse. I will tell you what is wrong before you pay me anything.
FAQ
Will you test with real money?
I test in Stripe test mode and Apple/Google sandbox first. Then, with your permission, one small live transaction which I refund immediately. Either way you get video proof the upgrade fires.
What does the RevenueCat "offerings are empty" error mean?
Usually one of three things: products not yet approved in App Store Connect, a bundle ID mismatch, or products never attached to an offering in the RevenueCat dashboard. I check all three.
Do you handle Apple and Google in-app purchases, or only Stripe?
Both. Apple requires in-app purchase for digital goods and will reject a Stripe checkout inside an iOS app. I set up RevenueCat, StoreKit and Play Billing properly so you pass review the first time.
What causes "webhook signature verification failed"?
Almost always one of two things: the wrong signing secret in your environment variables, or your framework parsing the request body before verification runs. Both are quick fixes once you know which one you have.
Why did my Stripe payment succeed but the user account never upgraded?
Stripe took the money and fired a confirmation webhook at your server. Your AI builder never built the endpoint that listens for it. Stripe did its job perfectly. Your app simply never got the message.
