Measured honestly
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 on the frame that actually 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.