Small tweak (extra achievement?)

Hey people, I read the sticky and couldn't find anything about the subject in other threads. But if it is stated before, I'm sorry ;)

The idea: people on iOS devices can check when they started playing CoC through gamecenter, but there is no such function on Android. It would be nice to see when people started to play.

Another idea I would like to see implemented is a total playing time. This could be a new achievement, but it doesn't have to be. The function on itself would be enough. I am curious just how much time I spend raiding and socializing on this amazing game.

Please give some feedback, I would like to know what you think :)