First, you'll tap with a metronome for calibration. Then keep the same tempo without the metronome. Settings are locked once you start. Press Space/Enter to start/tap, Esc to pause.
Click/tap to start
Session Summary
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How to Use (click to expand)
Set your target BPM (beats per minute).
Click to start. You'll hear metronome clicks during calibration.
Tap the screen (or press Space/Enter) in sync with the metronome beats.
After calibration, the metronome stops but you must continue tapping at the same tempo.
Your accuracy is measured by how consistent your internal timing is.
Lower deviation means better internal clock stability.