Tap the instant the screen changes colour — 5 rounds averaged
A reaction time test measures how quickly you can respond to a visual stimulus. The screen changes colour at a random moment, and you tap as fast as possible. Your reaction time is the gap between the colour change and your tap, measured in milliseconds.
This test runs 5 rounds and averages your results to give a reliable reading. Random delays between 2 and 6 seconds prevent you from guessing when the change will happen.
The average human visual reaction time is around 250ms. Here's how scores generally break down:
| Level | Reaction Time | What it means |
|---|---|---|
| Slow | 400ms+ | You might have been distracted. Or asleep. |
| Average | 250–400ms | Perfectly normal human reflexes. |
| Fast | 200–250ms | Quick reflexes. Above average. |
| Very Fast | 150–200ms | Excellent. Competitive gamer territory. |
| Elite | Under 150ms | Exceptional reflexes — or suspicious timing. |
Touch screens add a small amount of input latency compared to mouse clicks, so mobile scores tend to be slightly higher (slower) than desktop scores. A mobile reaction time under 250ms is genuinely fast.
A single reaction time measurement can be wildly off due to distraction, anticipation, or luck. Averaging 5 rounds gives a much more accurate picture of your true reaction speed.
If you tap before the colour changes, the round doesn't count. You'll see a warning and the round restarts. No penalty — just patience.
Yes. Screen refresh rate and touch input latency vary between devices. Higher-end phones with 120Hz displays and fast touch sampling will register taps slightly sooner, giving marginally better scores.