Brain Training - is the best app for concentration training. A specially developed exercise significantly improves concentration and affects the better performance and efficiency of our brain. This is great support for learning and working memory. The game is intended for both children and adults. How to play? The user counts in the memory the number of occurrences of four digits (1-4) drawn in subsequent cycles. The exercise begins with five repetitions increased in subsequent rounds. After each round, enter the four numerical values assigned to the four digits indicating the number of occurrences of each one. The correct answers are assigned points that we can compare with the results of other players around the world.