U Music Privacy Policy

Effective date: August 10, 2026

1. We don’t collect, sell, or track your data

U Music doesn’t require an account, display ads, or use analytics, advertising identifiers, or cross-app tracking. We don’t operate servers for storing your music, lyrics, playback history, or WebDAV credentials, and we don’t sell or share your personal data.

Except for the online features you actively initiate and that are described in this policy, your music and library data stay on your device.

2. Information stored on your device

To provide library and playback features, U Music stores or accesses the following information locally on your device:

• Audio file locations, names, artists, albums, years, genres, play counts, and import dates;
• Playlists, blog content, playback queues, playback positions, and app preferences you create;
• Lyrics you import, edit, or generate with AI;
• Artwork you choose, import, or obtain through online matching;
• Music files imported through the file picker, Wi-Fi transfer, or WebDAV and managed by the app;
• WebDAV account names, server addresses, usernames, and confirmed certificate fingerprints.

WebDAV passwords are stored only in the system Keychain and aren’t written to ordinary app preferences or sent to us. On macOS, U Music stores security-scoped bookmarks for files you authorize; on iOS, audio imported through the file picker is copied into the app’s managed local storage.

3. Online matching and iTunes Search

Only when you actively use features such as online matching does U Music send a search request made from a song title, artist, album, and/or filename to Apple’s iTunes Search service to find possible matching music information.

U Music doesn’t upload full audio files, lyrics, or the music file itself to this service. We don’t retain these search requests. Returned song names, artists, albums, artwork, and preview links are used only to show candidates, help you confirm a match, and play official previews. Apple’s own privacy policy and terms apply to its services.

4. WebDAV / NAS

WebDAV connects only to a server or NAS that you configure. Files and authentication requests travel directly between your device and that server, without passing through our servers.

U Music uses HTTPS by default. The iOS app uses HTTPS only. The macOS app can use HTTP only when you explicitly allow it for a local-network server. HTTP is less secure than HTTPS and should be used only on a trusted local network.

5. Local-network Wi-Fi transfer

Only when you actively enable Wi-Fi transfer does U Music temporarily start a receiving service on the current local network. Pairing codes and session tokens are used only to transfer music files you choose directly to the current device.

Wi-Fi transfer doesn’t upload files to the internet or our servers. The temporary receiving service closes when you stop receiving.

6. AI lyric generation

When you actively download an AI lyric model in the app, U Music retrieves the Whisper model manifest and model files from GitHub Releases and installs the model on your device. AI lyric generation processes the audio file you choose with that local model; audio, lyrics, recognition results, and related metadata aren’t uploaded to our servers or a third-party AI service.

7. Deletion and retention

You can delete songs, lyrics, artwork, playlists, and blog content in the app. Deleting a song also removes associated lyrics and artwork caches.

• On iOS, deleting a song removes the audio copy managed by the app. The original file imported from the Files app isn’t deleted. Audio imported through Wi-Fi or WebDAV and managed by the app is deleted with the song.
• On macOS, deleting a song removes its library record but doesn’t automatically delete the original local audio file or Wi-Fi/WebDAV audio stored locally by the app, to avoid accidental deletion.

Uninstalling the app removes data in its sandbox. U Music has no developer-operated server or user account, so there’s no cloud data deletion request to make to us.

8. Changes to this policy

If our data practices materially change—for example, if we add accounts, cloud sync, analytics, advertising, third-party AI, or developer-operated servers—we’ll update this privacy policy first and update App Store privacy information when applicable.

9. Contact us

If you have questions about this privacy policy or your privacy rights, contact us at kinglee19931031@gmail.com.