Simple Reaction Timer

Lights out—tap fast! Track your fastest time in ms, beat your PB, share with friends, and customise your light colour. How quick are your reactions?

How fast are your reactions? Reaction Timer Free puts your reflexes to the test. Watch the start lights… when they go out, tap immediately. Chase a new personal best, share times with friends, and tweak the light colours to your style.

Why you’ll love it • True reaction test — lights count down, then it’s all you. • Fastest time tracker — your best is saved on device. • “New Fastest Time” banner when you beat your PB. • Share in one tap — WhatsApp, Messenger, and more. • Custom colours — pick any light colour you like. • Simple & clean — built for quick plays.