PowerfulSight app for iPhone and iPad

This game will test your eyes and mind skills.Its a fun game. You will be shown a set of buttons with same color but each button will have different shades of that color i.e. lighter/darker than others. You have to now identify and tap the colors in a order from lighter color to darker color or vice versa. Each Right tap will earn you one point. Wrong answer wil end your game. There is timer also. So you have to quickly react. There are 3 game mode, each having its own difficulties and reaction time.