Keiblo app for iPhone and iPad

Enjoy Mathematics with Keiblo! Keiblo is a mental arithmetic skill game where you try to make as many calculations as possible within 60 seconds. At first you have to locate a calculation within a 7x7 square of numbers and digits, then you mark it with two finger tips and finally you enter the result into a pocket calculator right to the square.


Features:

Calculations can be located in rows, columns or diagonals
Combination of two calculations
Adjustable difficulty (1-9, 1-19 or 1-99, +,-, or *), two-digit numbers only in upgrade version
Statistics to track performance (upgrade version)
Coach that indicates the calculation with the maximum number of points (upgrade version)
Play online against up to four opponents via Game Center
HD support
Support is given in English, Japanese and German