Computer plays a pattern. You clap it back. The page measures how close you got — overall, and beat-by-beat — and shows you which hits were early, late, or right on.
DIFFICULTY
TEMPO 100 BPM
READY
Press Play to hear the pattern.
Tap the circle, click anywhere, or press Space. Your hits appear below.
LAST—
BEST—
STREAK0≥80 in a row
How scoring works
Each pattern is a list of hits expressed in beats (a beat = a quarter note at the chosen tempo). The computer plays a 1-beat count-in, then the pattern.
When it's your turn, every tap is timestamped. We line your hits up against the expected hits in order. The score is 100 − (mean error in beats × 100), clamped to 0. A 100 means every tap was within 1% of a beat of the expected time. Hits you miss entirely subtract 15 points each.
The dots below show beat-by-beat accuracy: ● within ±5% · ● early · ● late · ● missing entirely.
