Rhythm Checker - Metronome

Rhythm Checker lets you visually input and accurately play back rhythm patterns. Unlike a simple metronome that just keeps the beat, you can create your own rhythm patterns — including triplets and complex rhythms — and hear them played back precisely.

【What Makes It Different From a Metronome】
A regular metronome just ticks. Rhythm Checker lets you build a full rhythm pattern with different note values and hear exactly how it sounds. Perfect for checking sheet music rhythms before playing.

【Key Features】

■ Visual Rhythm Input
Select notes from the palette and tap to place them on the timeline. Supports whole notes to sixteenth notes, triplets, and various rests. Your input is displayed visually like sheet music for intuitive editing.

■ High-Precision Playback (±5ms accuracy)
Powered by Google's low-latency audio library "Oboe", rhythms play back with ±5ms accuracy. Supports 40–300 BPM.

■ Flexible Time Signatures
Supports 2/4, 3/4, 4/4, 6/8, 7/8 and more. Configure numerators from 1–8 and denominators of 2, 4, or 8.

■ Useful Practice Features
・Count-in: One measure count before playback
・Metronome: Click sound on each beat
・Accent: Emphasize the first beat
・Repeat: Loop pattern continuously

■ Editing Functions
・Insert and delete notes
・Undo (up to 100 actions)
・Clear all
・Support for 2–8 measures

■ Other Features
・Fully offline — no internet needed
・Light/Dark mode support
・Japanese/English support
・Portrait/Landscape orientation support
・Auto-save and restore last session

【Perfect For】
・Piano, guitar, drum, and wind instrument players
・Music students and learners
・Anyone wanting to improve their rhythm skills
・Checking sheet music rhythms before performing
・Music teachers
・Anyone who finds a regular metronome too limiting

Practice and check rhythms anytime, anywhere — no internet connection required.

metronome / rhythm practice / music practice / rhythm trainer / instrument practice / music learning / sheet music / BPM / time signature