Rudimentalist is a practice tool for drummers working through the PAS rudiments — from singles and paradiddles to flams, drags, and rolls. Set a tempo, tap start, and play. The app listens through your microphone, scores every hit against the metronome, and tells you exactly where the timing slipped — to the millisecond.
No recordings. No accounts. No uploads. Audio is analysed on-device in real time and discarded immediately.
WHAT YOU GET
• 39 of the Percussive Arts Society's 40 rudiments — singles, doubles, paradiddles, flams, drags, and rolls — organised by family. The buzz roll is coming in a future update.
• Grace-note scoring: the app hears the grace strokes in your flams and drags and scores them too.
• Live per-hit timing feedback in milliseconds, with on-time / near-miss / missed colours so you can read the screen and fix the hand without breaking tempo.
• A drift label that tells you whether you are consistently rushing or dragging, plus a running session accuracy percentage.
• Adjustable tempo and session length so you can drill a phrase or run an exercise end-to-end.
• A session results screen that summarises accuracy and drift across the patterns you played.
• Free to try. Rudimentalist Pro unlocks everything with a one-time lifetime purchase (Family Sharing supported) or a time-limited Pro Pass — no auto-renewing subscriptions.
LATENCY CALIBRATION
Every device and every audio route — built-in mic, AirPods, wired headphones — has its own latency. A 30-second calibration measures yours and applies it automatically, so the score reflects your playing, not your hardware. Re-run it whenever you switch outputs.
PRIVACY BY DESIGN
The microphone is the only sensor used, and the audio never leaves the device. No analytics SDK, no crash-reporting upload, no network permission requested. The app works fully offline.
WHO IT IS FOR
• Drummers who want to know whether they are actually on the click, not just close to it.
• Students working through a method book or a teacher's rudiment list.
• Returning players rebuilding consistency.
• Anyone who has ever wondered "am I rushing?" and wanted a real answer.
ABOUT THE DEVELOPER
Built by a drummer and app developer with a long-running passion for learning, playing, and teaching drumming. Rudimentalist is a one-person project — no company, no team. If you have feedback or run into issues, the support link below reaches me directly.
REQUIREMENTS
• A microphone — built-in is fine; an external mic gives sharper detection on a kit.
• Quiet-ish surroundings or a practice pad for clearest hit detection.
• iPhone or iPad on iOS 17 or later.
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