mixpanel is a new provider of a realtime analytics solution to measure the engagement with apps. The application tracks interaction and behavior as well as actions by defining funnels, the predefined and desired action at the end of a logical process.
The application may be used for all kind of apps both on the mobile internet and the web. This happens by a provided api interface, which is documented here. For further information visit the mixpanel homepage.
Directory Sources: Tracking, Web Metrics