Company PokerCruncher, LLC created these great apps:
PokerCruncher - Advanced Odds, Hold'em Odds Quizzer, PokerCruncher - Basic - Odds, Poker Odds Teacher, Tournament Cruncher (ICM), PokerCruncher for iPad - Adv, PokerCruncher - Expert - Odds, PokerCruncher - Basic - Odds, PokerCruncher - Preflop - Odds, and others..