What this is
A reaction time test you can run without installing anything. It times five rounds, shows your median, and says plainly what the number can and cannot tell you. It is a browser game for fun, not a medical, driving or safety test.
Who runs it
Online Reaction Time Test is run by the Online Reaction Time Test team. Questions and corrections go to hello@onlinereactiontimetest.com.
How it works
The test runs on your device, in your browser. Read the methodology for how the timing works and where it is limited, and the privacy page for what is and is not stored.