“Reaction” is a game for iPhone and iPad that allows the player to test their reaction time by swiping multiple arrows on-screen.  When an arrow appears on screen, you swipe with your finger in the direction the arrow shows.  For every successful swipe, you earn anywhere between 10-100 points depending on how fast that arrow is set to appear/disappear.  You have 25 levels, each allowing more points to be earned than the last.

When you finish the game, you are given a title, such as “Fingers Of Fury” if you managed to get all arrows swiped without error, or “Were You Asleep?” if you did not swipe as many as you should have.  This measures your average reaction time, in a fun yet challenging manner.