CalTrack 🍛

An Indian food calorie tracking app powered by AI. Scan food images, describe meals, or manually log your calorie intake.

Features

• 📷 Scan Food - Take a photo of your meal for instant calorie analysis
• ✍️ Describe Food - Type a description and get calorie estimates
• ➕ Manual Entry - Add custom food items manually
• 📊 Daily Tracking - View your daily calorie progress
• 📜 History - Browse your food log by date
• 🎯 Personalized Goals - Set your own daily calorie target

Tech Stack

• React Native with Expo
• TypeScript
• React Native Paper (Material Design 3)
• SQLite for local storage
• Portkey AI Gateway for LLM routing

Prerequisites

• Node.js 18+
• npm or yarn
• Expo CLI (npm install -g expo-cli)
• Expo Go app on your phone (for testing)

Setup

1. Clone the repository

   git clone https://github.com/aritroCoder/caltrack.git
   cd caltrack

2. Install dependencies

   npm install

3. Configure environment variables

   Create a .env file in the project root:

   EXPO_PUBLIC_PORTKEY_API_KEY=your_portkey_api_key_here

   Get your Portkey API key from portkey.ai

4. Start the development server

   npx expo start

5. Run on your device

   • Scan the QR code with Expo Go (Android) or Camera app (iOS)
   • Or press a to open on Android emulator
   • Or press w to open in web browser

Building APK

Option 1: EAS Build (Recommended)

1. Login to Expo

   eas login

2. Add your API key to EAS (one-time setup)

   eas env:create --name EXPO_PUBLIC_PORTKEY_API_KEY --value "your_api_key" --environment production --visibility sensitive

3. Build the APK

   eas build --platform android --profile production

Option 2: Local Build (Requires Android SDK)

npx expo run:android --variant release

Project Structure

caltrack/
├── App.tsx                 # Main app entry point
├── src/
│   ├── config/
│   │   ├── config.ts       # App configuration
│   │   └── prompts.ts      # AI prompt templates
│   ├── screens/
│   │   ├── HomeScreen.tsx      # Dashboard
│   │   ├── ResultScreen.tsx    # Analysis results
│   │   ├── HistoryScreen.tsx   # Food history
│   │   ├── TextInputScreen.tsx # Text-based input
│   │   ├── ManualEntryScreen.tsx # Manual food entry
│   │   ├── OnboardingScreen.tsx  # First-run setup
│   │   └── SettingsScreen.tsx    # User settings
│   ├── services/
│   │   ├── geminiService.ts    # AI API integration
│   │   └── databaseService.ts  # SQLite operations
│   ├── store/
│   │   └── appStore.ts     # Zustand state management
│   └── theme/
│       └── index.ts        # App theme configuration
└── .env                    # Environment variables

License

MIT

Developer

Aritra Bhaduri