Apps for about the cost of a skinny latte.
The first ThreeBucksApp app on the Apple Store is Hold'em Eval (v1.0).
Hold'em Eval tells you what chance each player has to win the hand in Texas Hold'em. Just dial in the cards for each player and hit "Evaluate". The calculated chance for each player to win or tie is given. You may also dial in the board cards and any known "dead" cards that were exposed or told to you by other players.