Great but..... – Einstein™ Brain Trainer Free: 30 exercises to practice your logic, memory, calculation, and vision skills - more effective than sudoku, puzzle, or quiz games Review

The user interface is not perfect especially for calculator computations. Numbers could be much larger and so could visuals, most of the screen is wasted. On something as small as a phone that's an issue. I struggle pressing the buttons I'm trying to press sometimes because I have larger than average fingers and you are rushing because its timed.
Review by Bomogo20 on Einstein™ Brain Trainer Free: 30 exercises to practice your logic, memory, calculation, and vision skills - more effective than sudoku, puzzle, or quiz games.