Expense Tracker App💰

A cross-platform expense tracker app built with React Native (Expo) and Node.js. Track income & expenses in real time!

Authentication Pages	Transaction Pages

✨ Features

• 🔐 User Authentication: Signup and login using Clerk authentication
• 📧 Email Verification: Secure 6-digit verification code before accessing the app
• 📱 5 Screens: Signup, Login, Verify Email, Home, and Create Transaction
• 💰 Expense Tracker: Add income or expenses and manage financial entries
• ⚡ Live Balance Updates: Current balance calculated dynamically
• 🗑️ Delete Transactions: Remove old entries with a single tap
• 🔄 Pull-to-Refresh: Classic refresh gesture implemented from scratch
• 👋 Logout: Easily switch accounts or sign out
• 🛡️ Rate Limiting: Redis-based protection for API endpoints
• 🚀 Backend: Express RESTful API connected to MongoDB

🛠️ Tech Stack

• Frontend: React Native, Expo
• Backend: Node.js with Express – RESTful API
• Database: MongoDB with Mongoose
• Caching & Rate Limiting: Redis
• Authentication: Clerk

⚙️ Installation & Setup

Prerequisites

• Node.js (v18 or higher)
• npm or yarn
• MongoDB database (e.g., MongoDB Atlas)
• Redis server (e.g., Upstash Redis)

Setup

1. Clone the repository

   git clone https://github.com/soumadip-dev/ExpenseTracker-RN-PERN.git
   cd ExpenseTracker-RN-PERN

2. Backend Setup

   cd server
   npm install

   Create a .env file in the server directory with:

   PORT=8080
   MONGO_URI=<your_mongodb_uri>
   UPSTASH_REDIS_REST_URL=<your_upstash_redis_rest_url>
   UPSTASH_REDIS_REST_TOKEN=<your_upstash_redis_rest_token>

3. Frontend Setup

   cd ../mobile
   npm install

   Create a .env file in the mobile directory with:

   EXPO_PUBLIC_CLERK_PUBLISHABLE_KEY=<your_clerk_publishable_key>

4. Run the Application

   • Backend (Terminal 1):

     cd server
     npm run dev

   • Frontend (Terminal 2):

     cd ../mobile
     npm start