Initial commit 🚀

Author: pH-7

.gitignore

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+# Learn more https://docs.github.com/en/get-started/getting-started-with-git/ignoring-files
+
+# dependencies
+node_modules/
+
+# Expo
+.expo/
+dist/
+web-build/
+expo-env.d.ts
+
+# Native
+*.orig.*
+*.jks
+*.p8
+*.p12
+*.key
+*.mobileprovision
+
+# Metro
+.metro-health-check*
+
+# debug
+npm-debug.*
+yarn-debug.*
+yarn-error.*
+
+# macOS
+.DS_Store
+*.pem
+
+# local env files
+.env*.local
+
+# typescript
+*.tsbuildinfo

App.tsx

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+import React, { useEffect } from 'react';
+import { StyleSheet } from 'react-native';
+import HomeScreen from './src/screens/HomeScreen';
+import * as Notifications from 'expo-notifications';
+
+// Configure notification handler
+Notifications.setNotificationHandler({
+  handleNotification: async () => ({
+    shouldShowAlert: true,
+    shouldPlaySound: true,
+    shouldSetBadge: false,
+  }),
+});
+
+export default function App() {
+  // App initialization
+  useEffect(() => {
+    // Configure notification settings on app startup
+    configureNotifications();
+  }, []);
+
+  // Configure notifications settings
+  const configureNotifications = async () => {
+    // Request permissions
+    await Notifications.requestPermissionsAsync();
+  };
+
+  return (
+    <HomeScreen />
+  );
+}
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+    backgroundColor: '#fff',
+  },
+});

README.md

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+# EMF Radiation Detector App
+
+A robust React Native Expo application that detects and monitors electromagnetic field (EMF) radiation in your environment, providing real-time measurements and exposure tracking.
+
+## Features
+
+- **Real-time EMF Detection**: Uses your device's magnetometer to detect electromagnetic fields
+- **Visual Gauge**: Shows current EMF levels with an easy-to-read meter
+- **Exposure Tracking**: Monitors how long you've been exposed to various radiation levels
+- **Exposure Alerts**: Notifies you when you've been exposed to high EMF levels for too long
+- **Detailed Information**: Provides safety information about EMF radiation levels
+
+## Requirements
+
+- A device with a built-in magnetometer sensor
+- iOS 13.0+ or Android 6.0+
+- Expo Go app (for development testing)
+
+## Installation
+
+1. Clone this repository:
+```bash
+git clone https://github.com/yourusername/emf-radiation-detector-app.git
+cd emf-radiation-detector-app
+```
+
+2. Install dependencies:
+```bash
+npm install
+```
+
+3. Start the development server:
+```bash
+npx expo start
+```
+
+## Usage
+
+1. Launch the app on your device.
+2. Press the "Start Scanning" button to begin detecting EMF radiation.
+3. Move your device around to detect EMF sources in your environment.
+4. The meter will show the current radiation level and categorize it as:
+   - **SAFE** (Green): Safe for long-term exposure
+   - **MODERATE** (Yellow): Safe for limited exposure
+   - **HIGH** (Orange): Limited exposure recommended
+   - **VERY HIGH** (Orange-Red): Minimal exposure recommended
+   - **EXTREME** (Red): Avoid exposure
+
+5. The exposure tracking section will monitor how long you've been exposed to the current EMF level and warn you if you exceed recommended exposure times.
+
+## Technical Details
+
+### EMF Detection
+
+The app uses the device's magnetometer sensor to detect magnetic fields in the environment. The electromagnetic field magnitude is calculated from the 3-axis (X, Y, Z) magnetometer readings using the formula:
+
+```
+magnitude = sqrt(x² + y² + z²)
+```
+
+Measurements are provided in microtesla (μT), which is the standard unit for magnetic field strength.
+
+### Exposure Guidelines
+
+The app uses generally accepted guidelines for EMF exposure:
+
+- **Safe**: Below 0.3 μT (generally considered safe for extended periods)
+- **Moderate**: 0.3-1.0 μT (generally considered safe for typical daily exposure)
+- **High**: 1.0-6.0 μT (limit extended exposure)
+- **Very High**: 6.0-10.0 μT (minimize exposure time)
+- **Extreme**: Above 10.0 μT (avoid prolonged exposure)
+
+These values are based on common EMF safety recommendations but may vary depending on regulatory bodies and contexts.
+
+## Limitations
+
+- This app can only detect magnetic fields, which are just one component of electromagnetic radiation.
+- Consumer device magnetometers may not be as accurate as professional EMF meters.
+- The app cannot detect non-magnetic radiation such as radio waves or ionizing radiation.
+- Readings may be affected by the device's own electromagnetic components.
+
+## Tech Stack
+
+- React Native
+- TypeScript
+- Expo
+- expo-sensors (for magnetometer access)
+- react-native-reanimated (for smooth animations)
+- expo-notifications (for exposure alerts)
+
+## License
+
+MIT
+
+## Disclaimer
+
+This app is intended for educational and informational purposes only. It should not be used as a professional EMF measurement tool for safety-critical applications. While the app provides approximate readings of magnetic field strength, these should not be considered as definitive measurements for health and safety purposes. 

app.json

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+{
+  "expo": {
+    "name": "EMF Radiation Detector",
+    "slug": "emf-radiation-detector-app",
+    "version": "1.0.0",
+    "orientation": "portrait",
+    "icon": "./assets/icon.png",
+    "userInterfaceStyle": "light",
+    "newArchEnabled": true,
+    "splash": {
+      "image": "./assets/splash.png",
+      "resizeMode": "contain",
+      "backgroundColor": "#ffffff"
+    },
+    "assetBundlePatterns": [
+      "**/*"
+    ],
+    "ios": {
+      "supportsTablet": true,
+      "infoPlist": {
+        "NSMagnetometerUsageDescription": "This app uses the magnetometer to detect EMF radiation levels in your environment."
+      }
+    },
+    "android": {
+      "adaptiveIcon": {
+        "foregroundImage": "./assets/adaptive-icon.png",
+        "backgroundColor": "#ffffff"
+      },
+      "permissions": [
+        "android.permission.VIBRATE"
+      ]
+    },
+    "web": {
+      "favicon": "./assets/favicon.png"
+    },
+    "plugins": [
+      [
+        "expo-sensors",
+        {
+          "magnetometer": true
+        }
+      ],
+      [
+        "expo-notifications",
+        {
+          "icon": "./assets/notification-icon.png",
+          "color": "#ffffff"
+        }
+      ]
+    ],
+    "description": "An app to detect and monitor EMF radiation in your environment."
+  }
+}

assets/adaptive-icon.png

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+import { registerRootComponent } from 'expo';
+
+import App from './App';
+
+// registerRootComponent calls AppRegistry.registerComponent('main', () => App);
+// It also ensures that whether you load the app in Expo Go or in a native build,
+// the environment is set up appropriately
+registerRootComponent(App);