Latency Tunnel

Tap when the light pulse reaches the bright band to get a rough feel for your timing on this device.

No accounts or scores here; results are stored only in this browser and can be cleared with your local storage.

Run a trial

Press start, watch the pulse fall through the tunnel, then tap when it crosses the bright target band.

Waiting to start.

No trials yet on this device.

Offsets near 0 ms mean you tend to tap right as the pulse hits the target.
Positive offsets mean you usually react a little late.
Negative offsets mean you usually tap just before the pulse arrives, anticipating the target.

This is a small perception toy, not a diagnosis or precise network latency test.