Tap Color Mantra is an app that counts your taps on your phone or tablet. With each touch the screen is filled with a different tint of color, whose RGB color code equals the number of taps so far. 0 is Black, 255 is Blue, 65280 is Green, and 16777216 is White. A tapping app seems kind of useless, doesn't it? Just try it for a few minutes, or for a few thousand taps.