Blackjack Trainer is the best card counting and Blackjack strategy simulator for android. The problem with most of the BlackJack or 21 card counting simulators is they are based on a single player against the dealer. In a real game of BlackJack or 21 the player would not only need to keep up with his own cards but also all cards that have been dealt. BlackJack Trainer solves this by simulating a game with five players and the dealer.