1. The document discusses how analytics tools can help app developers understand user behavior and leverage their apps.
2. It shows how mobile usage has overtaken PCs and explores platform market shares over time, with Android becoming the dominant platform.
3. The document notes there is no universal analytics tool and different tools like Google Analytics and Flurry are better suited to different needs like real-time stats or tracking across ad networks.
4. It highlights Yandex Metrica as a free tool that can answer any questions about an audience through its simple interface and real-time updated data and reports.