How to use
- Press Start.
- Wait for the "Click now!" signal.
- Click as quickly as possible.
- Try a few times and look at your best and average.
When to use it
- Testing reflexes for gaming
- Comparing scores with friends
- Checking alertness when tired
Typical results
Most people react to a visual signal in about 200–300 ms. Your device, screen and mouse add a little delay, so compare results on the same device. Clicking before the signal resets the round.
Frequently asked questions
What is a good time?
Under 250 ms is quick for most people.
Why does the delay vary?
The signal appears after a random wait so you can't predict it.
Does my screen matter?
Yes, refresh rate and input lag add a few milliseconds.