Daily Brain Training for Android from JoyPlot
Daily Brain Training is a free app that contains different kinds of training that will help improve your memory and calculation speed.
How to play the game:
You can take the tests anytime and anywhere you want. You can also create four data in one device and compete with your friends in GooglePlay Game Service.
You can check how many training tests you have completed in the day. The more you train, the more you can get stamps that represent the number of training you have done. The higher the training level, the better score you can get.
