A free program for Android, by Doofah Software.
4 In A Row is a throwback to your childhood days. All you need to do is to form a line of four counters and you're done. You have the option to fight AI-controlled opponents, all have varying degrees of difficulty. You can fight the AI if you're new to the game or want to improve your skills. 4 In A Row offers three modes: No Timer, Timed Turns, and Time Game.
You can also engage in a two-player match, which makes the game more fun. With this mode, you can create passwords for lobbies and adjust in-game settings. The graphics of 4 In A Row are colorful whereas its interface is intuitive and not clunky. Presently, the game is available for download on the Play Store.