Privacy Policy

Last updated: May 14, 2026

Opus is a private listening journal for classical music. We built it the way we’d want to use it: your library of works, recordings, and notes belongs to you, stays with you, and is never shared with us or anyone else.

This policy explains exactly what Opus does and doesn’t do with your data.

What Opus collects

Opus collects only what you choose to enter into the app:

  • Composers, works, and recordings you log
  • Star ratings and notes you write
  • The date and time of each entry

That’s it. No name, no email, no location, no contacts.

Where your data lives

All journal entries are stored on your device. If you have iCloud enabled, entries are also synced to your private iCloud account so they appear across your Apple devices. This sync is handled entirely by Apple — your data passes through Apple’s iCloud infrastructure, not ours. We do not operate a server and we do not have access to your journal.

If you delete the app, your local data is removed. Data in iCloud can be deleted from Settings → [your name] → iCloud → Manage Account Storage → Opus.

Apple MusicKit

Opus uses Apple’s MusicKit framework to connect with Apple Music’s catalog. With your permission, MusicKit lets Opus do two things:

  1. Search the Apple Music catalogwhen you’re looking up a composer, work, or recording to log. Your search query is sent to Apple to return matching results.
  2. Surface your recently played classical albums on the home screen, so you can log them with one tap. Opus reads your recently played items from Apple Music and filters them to classical works. This list is generated on your device and is not sent to us or anyone else.

Opus does not read or store your full library, full listening history, playlists, or any other Apple Music data beyond what’s needed for the two features above.

Apple’s handling of MusicKit data is governed by Apple’s privacy policy.

You can revoke Opus’s access to Apple Music at any time in iOS Settings → Privacy & Security → Media & Apple Music.

Analytics and tracking

Opus does not include any third-party analytics SDKs, advertising SDKs, or crash-reporting services. We do not track you across apps or websites. We do not use cookies or device identifiers for advertising.

If you have opted in to “Share with App Developers” in iOS Settings, Apple may share anonymized, aggregated diagnostic data with us. You can change this setting at any time in Settings → Privacy & Security → Analytics & Improvements.

Children’s privacy

Opus is not directed at children under 13 and does not knowingly collect any data from children.

Data sharing

We do not sell, rent, or share your data with third parties. Because we do not collect or hold your data, there is nothing for us to share.

Your rights

You control your data because it lives on your device and in your iCloud account. You can edit or delete any entry within the app, or remove all data by deleting the app and your Opus iCloud container.

Users in the European Union (GDPR), the United Kingdom, and California (CCPA) have additional rights regarding personal data. Because Opus does not collect personal data on our end, these rights are exercised by managing your data directly in the app and on your Apple devices.

Changes to this policy

If we update this policy, we’ll change the “Last updated” date above and, where appropriate, notify you in the app.

Contact

Questions or concerns? Email support@opus.app.