Flash Calc

Flash mental calculation

Brain training program

Please add up the figure displayed one after another.

It becomes an error if not answering within 30 seconds.

Touch colored square to change any parameter.

The kind of the calculation can change the value if touching at the number, the digit number for the figure, and the display time also.

Nourishment to the brain. Please enjoy.

if you trained by this program,Sums can be mentally done early, so that you are surprised.