Privacy Policy for Partwise

Partwise: Music Theory Published by OFO Labs

Effective Date: September 2, 2026

Summary

Partwise does not collect, store, transmit, or process any personal data. The app contains no networking code at all. It works fully offline, including in aeroplane mode.

1. Publisher Information

OFO Labs Kiel, Germany 24105 Email: ofolabs@gmail.com

2. Data Collection

We do not collect any data.

Partwise has no account system, no sign in, no analytics, no advertising identifiers, no crash reporting and no tracking of any kind. We operate no servers. There is nowhere for information to be sent, even if we wanted it.

3. The marking needs no server

Every chord is spelled, every rule is checked and every correct realization is worked out on your own iPhone. Nothing is looked up, nothing is requested and nothing is sent. Two phones given the same exercise reach the same answer by computing it, not by fetching it.

4. What the app stores on your device

Which exercises you have finished, which one you had open last, and whether you have purchased Partwise Complete are stored locally on your iPhone. This information is included in your own encrypted iPhone backups if you have backups enabled. Those backups are between you and Apple. We never receive a copy.

5. No third party code

Partwise contains no third party software development kits. No advertising network, no analytics provider, no crash reporter, no payment processor other than Apple's own. The app is built entirely on Apple frameworks.

6. Purchases

Partwise Complete is a one time purchase handled entirely by Apple through StoreKit. We never see your payment details, your Apple Account, or your name. Apple tells the app only whether a purchase exists. Apple's own privacy policy governs that transaction.

7. Children

Partwise is rated 4+ and collects nothing from anyone, of any age. There is no user generated content, no messaging, and no way for one person using the app to reach another.

8. Your Rights

Because we hold no data about you, there is nothing for us to disclose, correct, export or delete. Deleting the app removes everything it stored on your device. Under the GDPR, the CCPA and comparable laws, the answer to every access or deletion request is the same: we have nothing.

9. Changes

If this policy ever changes, the new version will be published at this address with a new effective date. Any future change that involved collecting data would also require a new app version and a new App Privacy declaration on the App Store.

10. Contact

Questions about this policy: ofolabs@gmail.com