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Reflex game

Reaction Timer

Reaction Timer is a fast browser reflex game. Start a round, wait for the signal, and click only when the panel turns ready. Click too early and the round is lost.

How to play

  • Press Start to begin a round.
  • Wait until the panel changes to ready.
  • Click immediately and try to lower your best time.

Good for quick sessions

Each attempt takes only a few seconds, making Reaction Timer easy to replay while chasing a sharper score.

Reaction Timer FAQ

Is Reaction Timer free?

Yes. Reaction Timer is free and runs in the browser.

What counts as a good reaction time?

Most people will see times in the low hundreds of milliseconds. The fun is beating your own best time.

Does it work on phones?

Yes. You can tap the ready panel on mobile, though device latency can affect results.