We've got authentication. Now let's give our React Native app a real cloud database.

In Video #27 of AI Mobile Engineer 2026, we connect our existing React Native Expo app with Firebase Cloud Firestore and turn it into a full stack mobile application.

We start by using Gemini to prepare a professional implementation prompt, then use Cursor AI to implement the complete Firestore functionality inside our existing Firebase Auth app.

We also use NativeWind for modern UI styling and React Native Reanimated for smooth animations and interactions.

Finally, we run the complete application with Expo Go and test it on a physical device.

WHAT WE BUILD IN THIS VIDEO
* Connect React Native Expo with Firebase Cloud Firestore
* Understand Firestore collections and documents
* Store application data in the cloud
* Read and display Firestore data in the mobile app
* Update existing data
* Remove data
* Integrate Firestore into our existing Firebase Authentication app
* Prepare a professional development prompt with Gemini
* Implement the functionality using Cursor AI
* Build a modern interface with NativeWind
* Add animations and interactions with Reanimated
* Test the complete application on a physical device using Expo Go

By the end of this lecture, our app has authentication plus a real cloud database, making it a proper full stack mobile application.

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Website:
https://www.thetechzeen.com/

Complete Playlist:
https://www.youtube.com/playlist?list=PLIKgFOVIOd1Y

WhatsApp Community:
https://whatsapp.com/channel/0029VbDmJP617Emr7OAPtp1H

GitHub Source Code:
https://github.com/farzeen-ali/Firebase-Expo

GitHub Lecture Files:
https://github.com/farzeen-ali/AI-Mob-Engineer-Concepts

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