OuterPractice is a local-first browser tool that observes a musician's body during practice using pose tracking, facial-tension detection, and ambient audio analysis.
An outside observer for the way your body practices.
OuterPractice watches your posture, face, and timing during music practice — and shows you what it noticed afterward. Local, in your browser.
Try it →What it observes
Posture
Shoulders, head, torso angle — second by second.
Face
Jaw clench, brow tension, blink rate.
Timing
Ambient audio for onset patterns and dynamic shifts.
What you get back
"Your shoulders crept up gradually during the fast passage. Often a sign that the tempo is just a touch too high to stay relaxed."
Two paths
Three things it doesn't do
- It does not record video or audio. Only derived features persist.
- It does not tell you how to play. It describes what it observed.
- It does not need an account. Everything stays in your browser.
Questions
What does OuterPractice actually measure?
Posture (shoulder rise, head tilt, torso angle), facial-tension markers (jaw, brow, blink rate), and ambient audio features (onset jitter, dynamic events). Nothing is recorded — only per-second feature vectors persist.
Does it work for instruments other than drums?
The pose and face models work for any seated or standing musician. Tension patterns are currently tuned for drumming; other instruments fall back to generic baselines.
Where is my data stored?
In your browser, in IndexedDB. There is no server. OuterPractice cannot read your data because it never reaches us.
Does it work offline?
Yes, after the initial MediaPipe model download. The app installs as a PWA and runs without network access thereafter.
Is it free?
The musician side is free. The teacher mode is €149 once for full use; up to 3 imported sessions are free. See pricing for the full breakdown.