Open Source Mobile Analytics App – Countly
Countly is a modern, real-time and open source mobile analytics application which can collect data from mobile phones and visualize that info for analyzing mobile app usage + end-user behaviour.
It is formed of 3 parts: the Countly server + frontend, iOS SDK and Android SDK.
With an event-driven system, almost every action can be tracked including in-app purchases, when a user closes the app, ad-click behavior, etc.
All these details are displayed in the slick interface of Countly. And, you are not limited to racking a single app. The same interface enables adding any number of apps.