Keep your mind sharp and easy with a simple mental calculation, while waiting for the bus or bus, just a few minutes to spare. - FREE !! - 14 math games of different kind - New math games will arrive soon - Incremental skills and difficulties. - Easy and quick to use in spare time for casual secrets of braintraining. - Relaxing and exclusive design. New future are work-in-progress, stay tuned! For every suggestions, info or problem, don't hesitate and contact me on indie.walkabout.1971@gmail