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Flash Anzan
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Is your arithmetic skill sharp enough? This app lets you train it and boost it up.

*How it works*
Numbers appear and disappear in rapid succession. You must count them all and enter the total after the sequence is over.

*Featured in this version*
A settings screen lets you adjust the speed level and the amount of flashes per round.

Recommended for both the young and the elderly who want to improve their calculating performance!