Install Mixpanel

pip install mixpanel

from mixpanel import Mixpanel

mp = Mixpanel("YOUR_TOKEN")

npm install mixpanel

// Grab the Mixpanel factory
var Mixpanel = require("mixpanel");

// Create an instance of the mixpanel client
var mixpanel = Mixpanel.init("YOUR_TOKEN");

import Mixpanel

func application(_ application: UIApplication,
                 didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    ...
    // Replace with your Project Token
    Mixpanel.initialize(token: "YOUR_TOKEN", trackAutomaticEvents: false)
    ...
}

<!--Required to allow the application to send events to Mixpanel.-->
<uses-permission android:name="android.permission.INTERNET" />

<!--Optional, but recommended so we can send data intelligently based on network conditions -->
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<!-- Optional, but recommended so events will contain information about bluetooth state-->
<uses-permission android:name="android.permission.BLUETOOTH" />

import com.mixpanel.android.mpmetrics.MixpanelAPI;

public class MainActivity extends ActionBarActivity {
  private MixpanelAPI mp;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    trackAutomaticEvents = false;
    // Replace with your Project Token
    mp = MixpanelAPI.getInstance(this, "YOUR_TOKEN", trackAutomaticEvents);
  }
}

npm install mixpanel-react-native

pod install

//Import Mixpanel API
import { Mixpanel } from "mixpanel-react-native";

// Set up an instance of Mixpanel
const trackAutomaticEvents = false;
const mixpanel = new Mixpanel("YOUR_TOKEN", trackAutomaticEvents);
mixpanel.init();

flutter pub get

import 'package:mixpanel_flutter/mixpanel_flutter.dart';

class _YourClassState extends State<YourClass> {
  Mixpanel mixpanel;

  @override
  void initState() {
    super.initState();
    initMixpanel();
  }

  Future<void> initMixpanel() async {
    // Once you've called this method once, you can access `mixpanel` throughout the rest of your application.
    mixpanel = await Mixpanel.init("YOUR_TOKEN", trackAutomaticEvents: false);
  }
}