Possible Duplicate:
Cocos2D OR libgdx for Android Game Developement
I am interested in using cocos2d-x for Android and iOS development but not sure it its ready for prime time? How does cocos2d-x compare to libgdx on android? It seems like they could spend some more time on documentation, and feature updates is slow right now. On the other hand LibGDX seems to have issues ... I think Cocos2d-x is more idealistic running on iOS and Android. A major C++ +.
Where are the apps developed using Cocos2d-x?
I don't really agree with your statement about "feature updates is slow right now". The cocos2d-x project is evolving and they've released version 2.0.1 less than a month ago. They're also targeting new platforms (win8, win phone) and new technologies (like Javascript).
I agree that the documentation is not great, but most cocos2d documentation is useful for cocos2d-x as they're targeting feature parity with it. Also, let me suggest you a tutorial that explains really well how to setup cocos2d-x on both iOS and Android:
http://www.raywenderlich.com/11283/cocos2d-x-for-ios-and-android-getting-started (part 1)
http://www.raywenderlich.com/11338/cocos2d-x-for-ios-and-android-space-game (part 2)
There's also a free, online Cocos2d-X book being written: