This is a free version of my full-featured Gin Rummy Ultra app available on the Apple App Store.
There are no ads or in-app purchases. You play against the computer whose skill level is novice.
The full-featured Gin Rummy Ultra app has the additional features:
1) there are no ads or in-app purchases;
2) you can set the computer skill level to be novice, intermediate, or expert;
3) you can play rated games against the computer;
4) you can improve your play by asking the kibitzer to suggest a move.