Reflex challenge

When the screen flips green, tap or click once. Jump the gun on red and it does not count. Pure browser timing—no server.

Tap to start

Wait for green—then click fast.

Last —

Best —

Avg (5) —

Tip: use a mouse or one finger; trackpads add a little latency.

How to play. Tap the big area to start a round. When it turns green, click or tap once—your reaction time is recorded. Clicks on red (too early) don’t count. Reset stats clears last, best, and rolling average.