The way this app ranks flushes is wrong. By default a flush should be ranked by the highest card in the hand. So if I play a deuce of spades high flush, someone would have to play a full house or better to beat it. The app currently says a 2 a, 9,8,7 of hearts beats a 2,a,9,8,6 of spades flush... Shouldnt do that... If you change to rank flushes by suit first then a 10 high spades flush would beat an ace high heart flush, which again is wrong.
Pocket-6s about Big Deuce - Big 2 Classic, v2.3.5