I will fix react native expo error nextjs nodejs fintech app ios developer supabase

 It runs perfectly in Expo Go. You build the actual APK or send it to TestFlight, open it on a real phone, and it crashes on the splash screen. No error message. No warning. Nothing you changed on purpose.

Expo Go and a production build are not the same environment. A single import, a native module version mismatch (react-native-reanimated is a common culprit), or a route that only breaks once bundled, can crash silently in a real build while working fine in dev. Most people spend days guessing at random fixes from forum threads before finding the actual cause.

An app that runs clean on a real device build, not just in the Expo Go sandbox.

 I reproduce the crash in an actual build (not Expo Go), isolate the exact module or import causing it, and fix it. If there are other hidden native module conflicts waiting to surface later, the Premium package audits for those too.

Send me your app and confirm which build type crashes (APK, TestFlight, or both). I'll tell you what's actually breaking before I fix it.