A free app for Android, by Elektron Labs Inc.

You can train your brain for a number of different cognitive skills, such as memory, attention, language, math, flexibility, speed, and problem-solving.

This app includes a number of different games that are based on the different cognitive skills that you can train. These games are tailored to help you improve the specific skills that you have trouble with.

Each game is based on a set of exercises that you do by yourself. You can also track your progress and compare your brain scores with other users.