The app is designed to facilitate the use of the BlackJack Basic Strategy. Basic strategy is based upon a players point total and the dealers visible card.Each BlackJack game has a basic strategy, which prescribes the optimal method of playing any hand against any dealer up-card so that the long-term house advantage (the expected loss of the player) is minimized.If you perfectly follow the strategies outlined in this guide, you can reduce the houses advantage to less than 0.5%, making BlackJack the most advantageous game to the player.Perfect BlackJack strategy has been determined using probability theory and computer simulations which have figured out the best play in each situation.