What are the solutions for analyzing user behavior?

Question

iOS

An application is being developed, tools for analyzing user behavior are needed: what actions are performed, how much time is spent on each screen, demographics, etc.
What are possible open source solutions in this area? Interested in the processing of ready-made data arrays.

Answer 1

No open source, maximum - classes for Heat Maps on JS / PHP and Piwik in analytics,
and "demography" is not at all from this opera

Answer 2

Metrica from Yandex can track the user.