A free program for Android, by Famobi.
Gin Rummy Plus: Five Card Game is the world’s most popular card game. Play it online against computer opponents or challenge your friends and family in local multiplayer.
In Gin Rummy Plus, you play by the original Gin Rummy rules. You can form sets and runs with cards of the same rank or you can mix them up to form new cards. The goal is to get as close as possible to 100 points without going over.
The gameplay is very simple, but it does take some skills. If you’re a beginner, the game will be pretty easy for you. However, as you gain experience and get better at it, the gameplay will get more and more difficult.