The usual practice of this activity will provide a great mental agility. With mind calculator you can choose between six games: STAIRWAY, BODMAS, SPEED, SPEED 2, TWISTIES y IN A ROW. There are 5 levels of difficulty: beginner, easy, medium, hard and expert. You can also reduce the difficulty of the game, using only addition and subtraction, ideal for children. You can save your best results in each of the levels, and improve day by day. Choose a player and get the name you want. Each player has their personal preferences and their own results table.