BeatCell Rhythm Lab

BeatCell Rhythm Lab is an offline-first rhythm literacy workbench for school band directors, choir teachers, private-lesson instructors, and serious music students. Write countable multi-measure patterns on a beat grid, teach them with a click-track, and drill them before rehearsal—not a metronome toy or sheet-music browser. COMPOSE ON A REAL BEAT GRID Place note-value and rest chips onto subdivision cells (1, e, &, a) across successive measures. Mark accents and ties, lock a time signature (2/4, 3/4, 4/4, 5/4, 6/8), set tempo, and shape dynamics on a fullscreen composer built for countable rhythm. TEACH MODE The active measure scrolls with an audible click-track and cell pulse highlights. A large conductor-facing count readout helps you model the pattern for the room. ECHO CHALLENGE Hear a seeded or custom pattern, then rebuild it on a blank grid. Instant accuracy score with retry and reveal so students hear, internalize, and write what they counted. REHEARSAL-ARC BOARD Sequence warm-up, technique, and ensemble rhythms for one class period. One-tap duplicate finished arcs into the next session so your stack is ready before the first downbeat. SEEDED LIBRARY, READY OFFLINE Forty-plus patterns across Beginning Band, Intermediate, Advanced, March, Swing, Latin, and Concert packs ship in the app—cold-start screens are never empty. Save custom collections and favorites; rename, duplicate, and export as plain count text. Edit title, level tags, estimated bars, and teaching notes beside a live grid preview. First-run onboarding builds a sample 4-bar pattern, plays Teach Mode once, then lands on a filled Library Home. Settings cover default tempo, click sound, and grid density. Fully local Room storage, in-app Privacy Policy and Terms, and zero network requirement. Write real countable rhythm. Teach it. Drill it—offline before rehearsal starts.