TapNSlide for iPhone

From Zenalog:

Tap'N'Slide is a set of games of reaction time and coordination. In every different game mode, a grid of squares is drawn on the screen, the size of which is determined by the game difficulty. In Classic Tap, randomly two squares are selected as red, indicating the current targets. You must tap both of these targets at the same time in order to score a match. You then have a time limit to score the next match which appears. If you do not successfully tap the next targets in time your game will end. You initially start with 2 seconds to make a match, and this is reduced by 0.1 seconds each level you pass.