Sort-O - Rack-O inspired game iOS

You can play anytime and anywhere against computers and/or friends! Sort-O allows for a 2, 3, or 4 player game, but only one human player is required. To allow for appropriate length games, in 2 player mode there are 40 total cards, in 3 player mode there are 50 total cards, and in 4 player mode there are 60 total cards. Play against your friends in pass-and-play mode, or play against computers at difficulties of your choosing. The bots range from Very Easy to Very Hard to allow for an enjoyable experience for everyone.