Mental calculation Mirror

Mental calculation Mirror is a brain training app for calculating the number.

Mental calculation Mirror is a brain training app for calculating the number that appears on the screen.

In addition to the flash mental calculation of normal,You can display a mirror character.

You can make a flash mental calculation by specifying the number of digits, display speed, number of questions, minus the presence or absence, the mirror character.

Screen can be displayed in both the vertical and horizontal.