Compass App

A minimalist compass application built with Expo React Native that uses device sensors to show magnetic north.

Features

• Real-time compass with smooth needle rotation
• Minimalist design with black and white high contrast UI
• Large centered compass (250px diameter) for easy reading
• Cardinal directions (N, E, S, W) marked on compass face
• Digital heading display showing degrees (0-360°)
• Direction indicator showing N, NE, E, SE, S, SW, W, NW
• Magnetometer sensor integration for accurate orientation

Technical Details

• Built with Expo React Native
• Uses expo-sensors for device magnetometer access
• Updates every 100ms for smooth needle movement
• File-based routing with Expo Router
• TypeScript for type safety

Getting Started

1. Install dependencies

   bun install

2. Start the app

   bun start

3. Run on your device

   • Scan QR code with Expo Go app
   • Or use Android emulator/iOS simulator

How It Works

The app uses the device's magnetometer sensor to detect magnetic fields and calculate the device's heading relative to magnetic north. The compass needle rotates in real-time to show the current direction, with the red end pointing north.

Requirements

• Device with magnetometer sensor (smartphone/tablet)
• Expo Go app or development environment
• iOS/Android platform support