This is a new React Native project, bootstrapped using @react-native-community/cli.

Note: Make sure you have completed the React Native - Environment Setup instructions till "Creating a new application" step, before proceeding.

First, you will need to start Metro, the JavaScript bundler that ships with React Native.

To start Metro, run the following command from the root of your React Native project:

# using npm
npm start

# OR using Yarn
yarn start

Let Metro Bundler run in its own terminal. Open a new terminal from the root of your React Native project. Run the following command to start your Android or iOS app:

# using npm
npm run android

# OR using Yarn
yarn android

# using npm
npm run ios

# OR using Yarn
yarn ios

If everything is set up correctly, you should see your new app running in your Android Emulator or iOS Simulator shortly provided you have set up your emulator/simulator correctly.

This is one way to run your app — you can also run it directly from within Android Studio and Xcode respectively.

Now that you have successfully run the app, let's modify it.

1. Open App.tsx in your text editor of choice and edit some lines.

2. For Android: Press the R key twice or select "Reload" from the Developer Menu (Ctrl + M (on Window and Linux) or Cmd ⌘ + M (on macOS)) to see your changes!

   For iOS: Hit Cmd ⌘ + R in your iOS Simulator to reload the app and see your changes!

You've successfully run and modified your React Native App. 🥳

• If you want to add this new React Native code to an existing application, check out the Integration guide.
• If you're curious to learn more about React Native, check out the Introduction to React Native.

If you can't get this to work, see the Troubleshooting page.

Enterprise-level personal tracking app with AI-powered narrative generation, comprehensive data collection, and intelligent insights.

• AI Narrative Summaries - WebLLM-powered daily life narratives
• Complete Activity Tracking - Real-time sensor data, location, fitness
• Call Log Analysis - Contact patterns and communication insights
• App Usage Monitoring - Digital habits tracking
• Strava Integration - Sports and fitness data sync
• OAuth Authentication - Secure user authentication system
• SQLite Database - Local data storage with comprehensive schema
• Performance Optimized - Efficient data processing and caching

• React Native 0.72.15 - Cross-platform mobile development
• react-native-sqlite-2 - Database management (90% less frustration than sqlite-storage!)
• AppContext.js - Central state management system
• WebLLMBridge - AI narrative generation
• Expo Sensors - Real-time accelerometer, gyroscope tracking
• expo-location - GPS and location services
• Java 17 - Android build compatibility

• Java 17 (required for Android builds)
• Android SDK 34
• Node.js ≥16
• React Native CLI

• react-native-screens: 3.17.0 (pinned for Kotlin compatibility)
• react-native-gesture-handler: 2.6.0
• react-native-sqlite-2: ^3.2.1
• expo-location: ^16.1.0
• expo-sensors: ^12.4.0

# Install dependencies
npm install

# Set Java 17 (required for Android)
export JAVA_HOME=$(/opt/homebrew/bin/brew --prefix openjdk@17)/libexec/openjdk.jdk/Contents/Home

# Run on Android
npm run android

# Run on iOS  
npm run ios

This project uses patch-package to maintain compatibility:

Issue: Canvas? nullability conflict in ScreenStack.kt:310 Solution: Safe cast using op.canvas?.let { canvas -> pattern File: patches/react-native-screens+3.17.0.patch

// Before (causes compilation error)
super.drawChild(op.canvas, op.child, op.drawingTime)

// After (safe nullability handling) 
op.canvas?.let { canvas ->
    super.drawChild(canvas, op.child, op.drawingTime)
}

Installation: Patches are automatically applied via postinstall script.

✅ Complete enterprise architecture with 20+ services
✅ Kotlin 1.7 compatibility with forced dependency resolution
✅ DEX compilation optimization with multidex support
✅ Performance indexes for database queries
✅ Error handling and logging throughout
✅ Secure authentication and data encryption
✅ Cross-platform compatibility (Android/iOS)

• Dashboard - Real-time activity overview and AI insights
• Journal - Daily narrative summaries and reflections
• Stats - Comprehensive analytics and trends
• Settings - App configuration and AI preferences
• Data Import - External data source integration

• Local SQLite storage (data stays on device)
• Encrypted sensitive data storage
• OAuth secure authentication
• No unauthorized data transmission
• User-controlled data export/import

To learn more about React Native, take a look at the following resources:

• React Native Website - learn more about React Native.
• Getting Started - an overview of React Native and how setup your environment.
• Learn the Basics - a guided tour of the React Native basics.
• Blog - read the latest official React Native Blog posts.
• @facebook/react-native - the Open Source; GitHub repository for React Native.