The game is fun and clever, but the app is VERY basic and utilitarian. No undo, no access to rules while playing, no real tutorial, no multiplayer, no pass and play, no AI, no local high score list. Audio in-game is pretty minimal and often flakes out and stops working altogether mid-game. Luckily it doesn’t add much to gameplay anyway. The user interface on iPhone leaves much to be desired with no visible clues as to which dice or options are playable at different times.The built-in English rules were obviously translated from another language or written by a non-native English speaker. They are very poorly written and nearly impossible to understand. Thankfully, the game is pretty straightforward and if you struggle through a few games you’ll probably figure it out. You shouldn’t have to struggle though. A very, very basic app, for a very clever dice game.