Metrognomicon
A metronome that keeps time through every tempo change.
Coming soon to the App Store
A metronome that keeps time through every tempo change.
Most metronomes give you one tempo. Metrognomicon lets you build a sequence of them.
Create a chain of tempo segments — each with its own speed and length — and let them play straight through. Perfect for music that shifts gears: accelerandos, ritardandos, movements that move. Set a passage to run at 120 for sixteen bars, then 138 for the next thirty seconds, then ease back down, and let it carry you through, hands-free.
Built for musicians who practice with intent — classical players, students drilling difficult passages, and anyone working on a piece that doesn’t sit still at a single tempo.
Questions, bugs, or feature ideas? Email support@metrognomicon.com and we’ll get back to you.
When reporting a problem, it helps to include your device model, your iOS version, and the app version (shown on the App Store listing).
Last updated: May 2026
Short version: Metrognomicon collects nothing. The app runs entirely on your device, makes no network connections, and transmits no data anywhere.
None. Metrognomicon does not collect, store, or transmit any personal information. We have no servers, no accounts, and no way to know who you are or how you use the app.
Your tempo sequences and app preferences (such as your chosen sounds and appearance settings) are saved locally on your device so the app remembers them between sessions. This information never leaves your device. If you delete the app, it is removed with it.
None. The app contains no analytics, no crash reporting, no advertising, and no third-party tracking of any kind. It does not access any advertising or device identifiers.
Metrognomicon requests no permissions. It does not use your microphone, location, contacts, camera, or notifications. It plays audio through your device’s output only.
Because the app collects no data from anyone, it collects no data from children. It is safe for users of all ages.
If a future version of the app adds any feature that handles data differently, this policy will be updated before that version is released.
Questions about privacy? Email support@metrognomicon.com.