Reaction time · Focus
Reaction Time Test
Tap the instant the field changes colour. Five taps. No account.
No IQ score. No cognitive age. No percentile we can’t source.
Simple visual reaction · Focus
When the field flips, tap as fast as you can. Five taps, no account.
Your best on this device · —
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Keep going
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Free to play here. On Train, part of Core.
What this measures
This measures your simple visual reaction time on this device. It is not an intelligence test, and it does not predict anything away from this screen.
There are three ways to play, listed under the field: five taps for your median, the endless gauntlet where one miss ends the run, and a thirty-second sprint — then challenge a friend with the link the result card gives you.
How to get faster
You mostly get faster at this task — anticipating the signal, keeping your finger ready, and not jumping early. That’s a real, honest thing to practise, and it’s why the median matters more than a single lucky tap. We won’t tell you it makes you smarter; it makes you better at reacting to a colour on a screen.
Questions
- What is a good reaction time?
- We do not publish one, because we have no norming sample to publish it from — a number about other people needs a source, and we could not name one for this task. What you get instead is your own run: your median of five, your fastest and slowest tap, and the span your median sits in. Your device is part of every reaction number — a touchscreen and a browser both add lag — which is why we only compare you with your own plays on the same kind of device.
- Does this measure intelligence?
- No. This measures your simple visual reaction time on this device. It is not an intelligence test and does not predict anything away from this screen.
- Why is my phone slower than my laptop?
- A touchscreen adds roughly 50–70 ms of input lag and a display frame is another 8–16 ms, so part of every reaction number is the device, not you. That is why bests and averages are only ever compared within the same kind of device.
- How is my score calculated?
- From the median of your valid taps, not your single fastest — one lucky tap is luck; the median is you. Taps before the signal are voided, and responses under 100 ms can't be real reactions, so they're excluded.
- What are the three modes?
- Quick test gives you a clean five-tap median. Endless is an escalating gauntlet — simple taps become left/right choices and then go/no-go, and one miss ends the run. The 30-second sprint counts how many clean reactions you can land against the clock.