The short version
Ohms Rehearse collects no data. None.
No analytics. No telemetry. No account. No personal data. No usage metrics. No error beacons. No advertising IDs. No fingerprinting. No crash reports. No data of any kind is collected, stored, transmitted, or shared by Ohms Rehearse about you, your device, or your content.
Everything Ohms Rehearse does runs entirely on your Mac, on-device, using a bundled local runtime and locally-stored open-weights models. There is no cloud component. There is no server. There is no Ohms Rehearse account.
What we don't have, and therefore never see
Because Ohms Rehearse has no server-side component, none of the following exists anywhere in our infrastructure (which consists of: nothing): your name, email, phone, or address; your IP address, device identifier, or any hardware fingerprint; your content and anything derived from it; session timing, feature usage, or behavioural data; crash reports. The app does not phone home, ever.
Outbound traffic you initiate
The only outbound network traffic, all user-initiated, and none of it to Ohms Rehearse:
- App Store updates.When Apple ships a Ohms Rehearse update, the App Store delivers it. This traffic is between your Mac and Apple's servers. Ohms Rehearse is not involved.
- Links you click. If you click an external link inside the app, your default browser handles the request. Ohms Rehearse is not involved.
Permissions we request, and why
- Files you choose. Read the audio files you open, and write only the chord sheets you export, via the system file picker. Nothing else on disk is touched.
Ohms Rehearse does not request Camera, Contacts, Location, or Full Disk Access beyond what is listed above. If you grant nothing, it can read nothing.
On-device data you create
Your content and everything derived from it live on your disk under ~/Library/Containers/com.silosystems.ohmsrehearse/Data/Library/Application Support/OhmsRehearse/ (plus any folder you explicitly choose to export to). They are yours. We do not have access to them. Deleting Ohms Rehearse removes the app; your work remains under its container until you delete it manually.
Third-party components
Ohms Rehearse uses these open-source components and public services. None of them receive any data about you from Ohms Rehearse:
- Spleeter 2-stems on Core ML — bundled, on-device vocal/accompaniment separation for stem-mute play-along and the harmonic pre-pass before chord estimation (no download) — runs locally on-device.
- In-house vDSP chord engine — STFT -> beat-synchronous chromagram -> template matching -> Viterbi smoothing, with per-chord confidence — runs locally on-device.
- YIN + Krumhansl-Schmuckler key/tempo estimation on Accelerate (ported from the OhmTune pitch engine) — runs locally on-device.
- Spleeter 2-stems separation model (bundled in the app, MIT-licensed, runs on-device) (Bundled — no download) — runs locally on-device.
Children's privacy
Ohms Rehearse is rated 4+. Because no personal data is collected from any user, no special treatment is required for users under 13. Same policy applies regardless of age: nothing collected.
Changes
If we ever materially change how Ohms Rehearse handles data, we will publish an updated version of this page, announce the change prominently in the release notes, and require explicit consent in-app before any new collection begins. The current policy is: nothing is collected.
Contact
Questions about this policy: admin@ohmslaw.net