BlackJack Cheats (com.JustInG.blackjackcheats) on Google Play
Very good program for card counting. Easy and simple, good for online blackjack, gives you an edge for winning, not recommended in real casino, it's illegal, you're on your own. Explains how card counting strategy works and easy to learn it by your self with this app. Also, very fun to play it with friends, or teach them how to count cards. Ads Free.