Great practice!

The app is very well designed. You are required to lock in your card toss, so you can move cards around while you think about your best toss.
The app allows your replay the point tally in case you missed anything.
Three varying difficulty levels.
Finally, at the end of your game you get a statistics report showing the moves you made that were sub-optimal for possible points. Essentially showing you were you missed out on points during the game.

ZachTheHottieZebra about Cribbage Classic