Reaction Time Test
Measure how fast you react to a colour change. Five rounds, personal best and a share-ready score.
- Runs in your browser
- No upload on server
- Free, forever
- Set it up
- Play
- Share
How this works
- 1Watch the panel
Focus on the coloured area. It starts red — do not tap yet.
- 2Tap the moment it turns green
The panel flips to green at a random time. Tap or press space as fast as you can.
- 3See your reaction speed
You get five rounds. Your best time and average are saved on your device.
Watch: wait for green, then tap fast
Rounds
0/5
Average
—
Best avg
—
Tap or press Space. The screen turns green after a random pause — react as fast as you can. Anticipating counts as "too soon" and doesn't score.
Typical human reaction is 200–300 ms.
How this works — and why it's private
- Tap the big panel to start.
- Wait for green, then tap as fast as you can.
- After 5 rounds you get your average and personal best.
Rate Reaction Time Test
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No account, no email, no tracking — just a 1–5 number.
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