Hi, I'm happy to announce 'Tap Me So' is now available on the App Store and Google Play. It's free of course. It's a game which will tell you how quickly are you able to react and tap. From my experience, reaction faster than 0.5 sec is good, less than 0.4 sec is hard to achieve. It's more than one-button-tap game, there is science behind it Take a look: https://itunes.apple.com/us/app/id978095158?mt=8 https://play.google.com/store/apps/details?id=com.ak.tap