[potatolicious]

> "Do they also have my IMEI, phone contacts, emails and twitter accounts?"

No, that would be impossible without the app getting permission from you first.

> "why the fuck they have these stats in the first place?"

Because they need the stats to build the app. Knowing that a large percentage of their users are on Android 2.x prevents them from making breaking changes that won't work on older phones. Knowing the graphical and CPU performance of their demographics helps inform them of the limitations they need to place on their games to make them run properly on every device.

Or would you like to go back to the days where developers built completely blind to their target user base and simply published a set of System Requirements and leaves end users to decipher it and make sure they're compliant with it just to play your game?

This is no different than websites counting the number of page views and the browser market share of their visitors. This is purely aggregate work.