Five quick tests — reaction time, clicks per second, typing, aim and number memory. One round takes under a minute, the timing is done carefully, and your results never leave your device.
What Hz is your screen really running at, and how much does it add to your scores?
Measures your screen and mouse
Typical results at a glance
What published research and guides say about each test. Your own results include your screen and input device, so treat these as a frame, not a grade; each test page explains its numbers in full.
A speed score is part you and part machine. Your screen only shows a change at its next refresh, your mouse reports on a schedule, and your browser adds its own steps. Most test sites quietly fold all of that into your result. Here every test starts its clock with the browser’s timestamp for the frame that shows the signal and stops it on the instant your button, key or finger goes down. The “Your setup” box measures your screen’s refresh rate, so you can see how much room your hardware leaves you.
Your results stay with you
There are no accounts and no leaderboards. Each finished round is saved in your browser’s local storage, where it builds a private history with your personal bests and a trend line. You can turn any result into an image card, drawn on your own device, and share it wherever you like. Clear your history with one click whenever you want.
Playable by everyone
Every test works with a mouse, a touch screen or the keyboard alone. Signals never rely on colour: the reaction test switches from a dark dotted panel to a bright one and changes its words and icon at the same moment, so colour-blind players get the same cue. Nothing on the site flashes repeatedly.
Questions people ask
Do I need an account?
No. Every test works straight away, and your results are kept in your own browser rather than on a server.
Do the tests work on phones?
Yes. Each one is built for touch as well as mouse and keyboard. Phone results are usually a bit slower than desktop ones, so keep them apart when you compare.
Why do my scores differ from other sites?
Every site times things slightly differently, and every screen and mouse adds its own delay. This site starts the clock with the browser’s timestamp for the frame that shows the signal and stops it on the press itself, and it shows your screen’s refresh rate next to each test.
Are the tests a medical or IQ assessment?
No. They are quick measurements for fun and practice and should not be used to judge health, intelligence or job suitability.