Firebase Auth Not Working in Rork? Here's the Fix

Firebase Auth not working in your Rork app? The short answer: auth that fails everywhere is a configuration problem, not a logic bug. The Firebase setup files, initialization, the bundle id, and provider redirects all have to line up, and one missing piece breaks the whole thing. Work the chain and test on a real device. Build the auth UI from a free VP0 design, the free iOS design library for AI builders, and verify the full sign-in path. By the numbers, roughly 62% of developers already use AI tools day to day.

Who this is for

This is for developers whose Rork-exported app cannot sign in with Firebase Auth and want the specific configuration causes rather than guessing at the code.

Why Firebase Auth fails after export

Firebase needs its configuration to connect your app to your project, and exports often lose a link in that chain. The config file (GoogleService-Info on iOS) may not be bundled. Firebase may not be initialized before the first auth call. The bundle id may not match the app registered in the Firebase console, so Firebase rejects it. Or for social logins, the redirect URLs and provider settings may be unset. None of these are your auth code; they are setup. The Firebase Auth documentation covers the setup, the iOS setup guide covers the config and init, and Expo or React Native Firebase docs cover the integration.

Link	If missing	Fix
Config file	Cannot initialize	Bundle GoogleService-Info
Initialization	Auth calls fail	Init Firebase at startup
Bundle id	Firebase rejects app	Match the console registration
Provider redirects	Social login fails	Configure redirect URLs
Real device	Some flows need it	Test on hardware

Build the auth UI free with a VP0 design

The UI is yours to build cleanly while you fix config. Pick a login screen in VP0, copy its link, and prompt your AI builder:

Build a sign-in screen from this design: [paste VP0 link] wired to Firebase Auth, with email and a social provider, and clear loading and error states. Assume Firebase is initialized at startup from the config file. Match the palette and spacing from the reference, and generate clean code.

For related Rork and auth fixes, see a Rork Xcode build failed solution, a raw Firebase auth SwiftUI template, a Supabase sign-up flow UI for iOS, and how to export a Rork app to Xcode (como exportar).

Work the chain on a real device

Debug config top down. Confirm the GoogleService-Info config is actually in the build, not just the project. Confirm Firebase initializes at startup before any auth call runs. Check that the bundle id matches the app registered in the Firebase console exactly, since a mismatch silently breaks everything. For social logins, set the redirect URLs and enable the provider in the console. Then test the full sign-in on a physical device. Each link is a quick check, and once they all pass, Firebase Auth works, because the problem was never your code, it was the setup the export dropped.

Common mistakes

The first mistake is debugging auth code when the config is the issue. The second is the config file not bundled into the build. The third is using auth before Firebase is initialized. The fourth is a bundle id that does not match the Firebase console. The fifth is unset redirect URLs for social providers.

Key takeaways

• Firebase Auth failing in Rork is almost always configuration, not code.
• Bundle the config file, initialize Firebase at startup, and match the bundle id.
• Configure redirect URLs and providers for social logins.
• Test the full sign-in on a real device.
• Build the auth UI from a free VP0 reference while you fix the setup.

Sources

• Firebase Authentication: Google’s official auth SDK and flows.
• Expo EAS Build documentation: how Expo compiles a project into a real iOS binary.
• React Native architecture overview: how React Native renders real native views.

Frequently asked questions

Why is Firebase Auth not working in my Rork app? Almost always configuration: missing config file, Firebase not initialized, a bundle-id mismatch, or unset provider redirects. Work the chain and test on a real device.

How do I fix Firebase Auth configuration in an exported app? Include the config file, initialize Firebase at startup, match the bundle id to the console, and set redirect URLs for social logins, then test on hardware.

Why does Firebase work in dev but not after export? The config or init likely did not carry into the build, or the bundle id changed. Confirm the config is bundled, init runs, and the bundle id matches.

Do I need the GoogleService-Info file? On iOS, yes. It carries your project config, and without it Firebase cannot initialize, which looks like auth not working.