All thirteen tests

The Classic Reaction Time Test. It’s the standard see-green-then-click benchmark that every quoted average refers to, so it gives you a clean baseline. Once you have one, branch out — react by ear in the audio test, or put the same reflex under race-start pressure in the F1 test.

Pure Reaction is one signal, one response — the cleanest measure. Motorsport & Driving wraps that reflex in race starts and braking hazards. Cognitive adds a decision before you’re allowed to move. Sport & Skill uses reactions the way games do — aiming, catching, swinging — and Endurance & Speed measures how fast you can keep going, not just how fast you start.

Because they make your brain do more work. Picking the right target — or deciding whether to respond at all — adds real decision time on top of your raw reaction, so slower scores there are normal. Judge each test against its own score table, not against the classic.

Most tests run several rounds and score you on the median, so one lucky click or one distracted round never decides the result. A few measure something different by design — the CPS test, for example, is a single ten-second sprint scored in clicks per second.

Not directly — each test asks something different of you, so a good choice-test score is naturally slower than a good classic score. What you can do is track every test over time: results are saved on your device, and the stats page lines your benchmarks up side by side.

No. Every test runs in your browser, free, with no sign-up — and your scores stay on your device. Even the ruler drop test needs no ruler: it falls on screen under real gravity, and we convert your catch distance into milliseconds.