For $.99, its hard to go wrong... but... there are some glitches (at least on my iPod Touch) that make it frustrating: Double-tapping to move a card often leaves the uncovered card, well, covered still (not turned over). Also, twice, in the last three days, Ive gotten down to a point where all I have to do is move the remaining cards onto the stacks to win the hand... (think a row of queens and jacks ready to be placed)... and the game locks up. After resetting, it re-starts a full previous hand. Im going to try a different solitaire program.
StackTrack about Demon Solitaire