Reactions is a virtual reality app where you can test your reaction time.
Reactions is a VR app made by Jim k. It’s an app where you do many different tests of your actual speed, but also you can train your self to gain more speed. There is a variety of modes. Some of them are reaction time test/train, reflex test/train, Speed click test/train, Color speed test.
Although as the creator of the game said, you should play this game for at least one hour, because it may cause problems such as Nausea, vomiting, colour blindness and many more (especially if you play the Color speed test mode).
You can download this app on the Steam Market. It’s for free and it waits to see how good you are at it and to train you so you can get faster than a cat’s reflexes.