Swing Trainer

play it, see it, dial it in

mic idle

Play along with the click — your “ands” are scored.

Last few bars — where you hit vs. where the target falls

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no notes yet

your note on-beat target off-beat target

Swing

66.7%

Tempo

90bpm

Beats per bar

Audible upbeat

click on the “and,” at the swing point

Upbeat volume

50%

Onset sensitivity

50%

Watch the dot at the top flash once per note you play. Turn up if it misses notes; down if it fires on noise or sustain.

Distribution — your last 64 off-beats

Play your line along with the click. Each off-beat — the "and" between two beats — is placed on the timeline and scored against the gold target line. The dots near the taupe lines are your on-beats (or, through speakers, the click itself); the dots near the gold lines are what's measured.

No headphones needed. Through speakers the mic also hears the click, and the app locks onto that heard beat to cancel audio latency — so you're judged against where the beat actually sounds, not when it was scheduled. The one thing to avoid on speakers: the audible upbeat. The mic would hear it parked on the target and flatter your reading, so leave it off while measuring (it's fine on headphones).

Reading the number: 50% is dead even, ~66.7% a triplet feel, 75% a dotted-eighth shuffle. Start gives you a one-bar count-in, then the headline averages your off-beats over the last 10 seconds — so it tracks your recent playing and empties if you pause, and freezes where it was once you press Stop. Space starts and stops; if notes are missed or double-counted, the onset-sensitivity slider is the dial.