This app is a tool to improve reaction time and to measure it, we're using the same method as the official test.

How to play?

Just tap on the screen when it turns green to find how fast you can respond.

If you want to get faster, you can choose between the three options:

Vibrate mode: tap on the phone when it vibrates to find how fast you can respond.

Sound mode: tap on the phone when it beeps to find how fast you can respond.

You can also choose the mode you want to use:

When you're done, the results will appear in the app and you can see how fast you were able to respond.