RE: Free bitcoin every 2 minutes! My app review.

As a matter of fact I did, although I didn't try them yet (but I will):
https://play.google.com/store/apps/details?id=com.kran.bitcoin
https://play.google.com/store/apps/details?id=com.justanothertry.bitcoinminer
https://play.google.com/store/apps/details?id=hcss.killua.bitminerrobot.bitcoinminerrobot

Enjoy!