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Everyone can see the current score. Signed-in users can leave a 1 to 5 star rating, and any written review goes only to review@cleanor.app.
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Sign in to leave a public score from 1 to 5 stars. Optional written feedback is private and emailed only to review@cleanor.app.
This block mirrors the system review flow: score first, then an optional private note.
A quick way to understand who this helps, what it solves, and where it connects next.
Anyone testing their reaction speed.
Using the reaction time test without installing anything or signing up.
Capture reaction-time-test intent with a fast, browser-side tool that runs 100% locally.
Cleanor Labs
These sections explain the job in plain language and set expectations for what the tool should do well.
The Reaction Time Test measures how quickly you respond to a visual cue. Click to start a round, wait through a random delay, and the moment the box turns green click again as fast as you can. The tool records your reaction time in milliseconds over five rounds and reports your average and best. If you click before the box turns green it flags the jump so the round does not count. All timing happens in your browser with no upload, and the timers are guarded so they never run during server rendering.
Short answers for the questions people usually have before trying a utility like this.
Yes. It is completely free with no signup or install and runs entirely in your browser.
Most people land around 200 to 300 milliseconds for a simple visual click, though it varies with focus, screen, and input device.
The round is marked "too soon" and does not count toward your average. You simply click again to retry that round, which stops people from clicking early to game the score.
Every tool on Cleanor is free with no sign-up, no credits, and no limits. Files are processed privately in your browser. Looking for on-device phone cleanup and Premium features? That lives in the Cleanor app.
Click the box to start, wait for it to turn green, then click as fast as you can. Five rounds give you an average and a best time. Everything runs in your browser.
A typical human reaction time is around 200–300 ms. Clicking before the box turns green does not count.