If you want to track user behavior on your iPhone\iPad application, first download the Mixpanel iOS API by cloning the git repository:

git clone http://github.com/mixpanel/mixpanel-iphone.git

Or download the latest zip archive and extract the files. The respository has three folders:

1. Mixpanel - The Mixpanel iOS library and its dependencies.
2. HelloMixpanel - A sample application that tracks events and sets user properties using Mixpanel.
3. Docs - Headerdoc API reference.

Adding Mixpanel to your Xcode project is as easy as:

1. Drag and drop the Mixpanel folder into your project.
2. Check the "Copy items into destination Group's folder" and select Recursively create groups for any added folders.

And that's it.

The first thing you need to do is initialize Mixpanel with your project token. We recommend doing this in applicationDidFinishLaunching: or application:didFinishLaunchingWithOptions in your Application delegate.

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    

    // Override point for customization after application launch.
	[Mixpanel sharedInstanceWithToken:MIXPANEL_TOKEN];

    // Add the view controller's view to the window and display.
    [window addSubview:viewController.view];
    [window makeKeyAndVisible];
    return YES;
}

After initializing the Mixpanel object, you are ready to track events. This can be done with the following code snippet:

Mixpanel *mixpanel = [Mixpanel sharedInstance];
[mixpanel track:@"Clicked Button"];

If you want to add properties to the event you can do the following:

Mixpanel *mixpanel = [Mixpanel sharedInstance];
[mixpanel track:@"Player Create" 
     properties:[NSDictionary dictionaryWithObjectsAndKeys:@"Female", @"Gender", @"Premium", @"Plan", nil]];

Use the people accessor on the Mixpanel object to make calls to the Mixpanel People API. Unlike Mixpanel Engagement, you must explicitly set the distinct ID for the current user in Mixpanel People.

Mixpanel *mixpanel = [Mixpanel sharedInstance];
[mixpanel.people identify:@"user123"];
[mixpanel.people set:@"Bought Premium Plan" to:[NSDate date]];

To send your users push notifications through Mixpanel People, register device tokens as follows.

- (void)application:(UIApplication *)app didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)devToken {
    [self.mixpanel.people addPushDeviceToken:devToken];
}

1. Events iOS Library Documentation
2. People iOS Library Documentation
3. Full Headerdoc API Reference