💰 Expense Tracker Starter

Expense Tracker App | React Native, Node.js, MongoDB, Firebase, ChatGPT

A full-stack expense tracking mobile application with:

· Frontend: React Native (Expo) + Firebase Authentication, chart visualizations, offline sync

· Backend: Node.js/Express, MongoDB (Atlas), Firebase Admin (JWT verification), per-user data isolation

· AI Tooling: ChatGPT used throughout development for code generation, debugging, and logic optimization

📱 Screenshots

🔐 Login Screen

📊 Dashboard (Home)

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⚙️ Setup Instructions

1. Configure Firebase:

   • Add your Firebase config in frontend/firebase.js
   • Download your Firebase Admin SDK JSON and save it as backend/serviceAccountKey.json

2. Environment Setup:

   • Create a .env file in backend/ (you can copy from .env.example)
   • Add your MongoDB connection string, e.g.:

     MONGO_URI=mongodb+srv://<your-cluster>/expense-tracker

3. Install Dependencies:

   cd backend && npm install
   cd ../frontend && npm install