This App is a black style visual reaction time(VRT) training app.
background color is black.
Please memorize figures seen momentarily, and fill in the figures.
Memorizing it gradually becomes difficult.
When you enjoy it, I am glad.
This App is a black style visual reaction time(VRT) training app.
background color is black.
Please memorize figures seen momentarily, and fill in the figures.
Memorizing it gradually becomes difficult.
When you enjoy it, I am glad.