Applytics Flutter

A powerful Flutter analytics package inspired by PostHog. Send analytics events to your own backend with support for batching, session management, and automatic device information collection.

🚀 Features

  • ✅ Simple and intuitive event tracking
  • ✅ Automatic event batching
  • ✅ Automatic session management
  • ✅ User identification
  • ✅ Queue with periodic flushing
  • ✅ Debug mode support
  • ✅ Network error handling with retry
  • ✅ API connection testing
  • ✅ Singleton architecture for easy access
  • ✅ Automatic device and app info collection (included)

📦 Installation

Add this dependency to your pubspec.yaml:

dependencies:
  applytics_flutter: ^0.0.1

Then run:

flutter pub get

That's it! Device info packages are already included.

🎯 Basic Usage

1. Initialization

Initialize Applytics at app startup:

import 'package:applytics_flutter/applytics_flutter.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  ApplyticsClient.initialize(
    config: AnalyticsConfig(
      apiKey: 'your-project-api-key', // From your projects table
      debug: true, // Enable debug logs
      batchSize: 10, // Send events in batches of 10
      flushIntervalSeconds: 30, // Or every 30 seconds
    ),
  );

  runApp(MyApp());
}

2. Track Events

final analytics = ApplyticsClient.instance;

// Simple event
analytics.track('button_clicked');

// Event with properties
analytics.track('product_viewed', properties: {
  'product_id': '123',
  'product_name': 'iPhone 15',
  'category': 'electronics',
  'price': 999.99,
});

3. Identify a User

analytics.identify('user_123', userProperties: {
  'name': 'John Doe',
  'email': 'john@example.com',
  'plan': 'premium',
});

4. Reset (Logout)

analytics.reset(); // Reset user and session

🔧 Advanced Configuration

Configuration Options

AnalyticsConfig(
  apiKey: 'your-api-key', // Required
  
  debug: false, // Enable debug logs
  batchSize: 10, // Number of events before auto-send
  flushIntervalSeconds: 30, // Send interval in seconds
  timeoutSeconds: 10, // HTTP request timeout
  enableSessionTracking: true, // Enable session tracking
)

Additional Features

// Force immediate flush of all pending events
await analytics.flush();

// Get current queue size
int queueSize = analytics.queueSize;

// Get current session ID
String? sessionId = analytics.sessionId;

// Get current user ID
String? userId = analytics.userId;

// Test API connection
bool isConnected = await analytics.testConnection();

📡 Data Format

Events are sent in the following JSON format:

{
  "events": [
    {
      "name": "button_clicked",
      "properties": {
        "button_name": "submit"
      },
      "created_at": "2025-12-01T10:30:00.000Z",
      "user_id": "user_123",
      "session_id": "1701425400000-1701425400000000"
    }
  ]
}

Expected API Endpoints

Your backend should expose these endpoints:

  • POST /events)
  • GET /health - Check API health (optional)

🧪 Complete Example

Check the example/ folder for a complete application demonstrating all features.

📝 Best Practices

  1. Initialize once at application startup
  2. Use consistent event names (snake_case recommended)
  3. Add relevant properties for easier analysis
  4. Call flush() before closing the app to avoid losing events
  5. Enable debug mode during development

📄 License

MIT License

🤝 Contributing

Contributions are welcome! Feel free to open an issue or pull request.

Libraries

applytics_flutter