The one-line version
What MonoBand can access
Audio files you import
When you import a song — from the Files app, your Music library, a video in Photos, a share from another app, or a fresh recording — that audio is copied into the app's own sandboxed storage. iOS gates this access with the system file and media pickers; we never read files you didn't explicitly choose.
Microphone (only when you record or sing)
MonoBand asks for microphone access the first time you tap the record button, and again for Karaoke scoring. iOS shows its standard permission prompt, and the microphone is only active during an explicit recording or karaoke session. That audio is processed and saved on your device — it is not streamed or uploaded anywhere.
Speech recognition (only for lyrics)
If you ask MonoBand to produce lyrics for a song, it runs Apple's on-device speech recognition over that song's separated vocal track, using the Speech framework. The audio is analysed on your device and is never sent to us or to any server of ours. The first time you use a given language, iOS may download that language's speech model from Apple — that download is between your device and Apple, and it does not include any of your audio. The resulting lyrics are stored with the project on your device.
Translation (only when you ask for it)
If you choose to show a translation of a song's lyrics, MonoBand passes the lyric text to Apple's on-device Translation framework. Translation runs locally; the first time you use a language pair, iOS may download that language pack from Apple. We do not send lyrics, audio, or anything else to a server, and we do not use any third-party translation service.
Photos / cover art (optional)
If you choose to set a custom cover image for a song, MonoBand uses the standard iOS photo picker to read the single image you pick. We don't scan your library, we don't see other photos, and we don't keep any references after you've chosen.
CarPlay
When your iPhone is connected to a CarPlay-equipped vehicle, MonoBand can show your songs, playlists and favorites on the car's display and play them. It reads only your own MonoBand library, and it sends nothing to the vehicle beyond what is needed to draw those lists and play audio.
What MonoBand does not do
- No servers. MonoBand makes no network requests for stem separation, BPM/key detection, transpose, karaoke pitch analysis, lyrics transcription, translation, or any other processing. All of it runs locally on your device.
- No analytics or telemetry. We don't track which features you use, how long sessions last, or anything else.
- No third-party tracking SDKs. No Facebook, Firebase, Google Analytics, advertising networks, or crash reporters that phone home. The open-source components we ship (the on-device AI model, its runtime, and the audio engine) run locally and collect nothing.
- No accounts or sign-in. There is no MonoBand account because there is no MonoBand backend to sign in to.
- No ads. No banners, no interstitials, no sponsored content of any kind.
Where your data lives
Imported songs, separated stems, recordings, lyrics and their translations, project metadata, playback preferences, and section markers are all stored inside MonoBand's app sandbox on your device. If you have iCloud Drive set to back up app data, Apple may include MonoBand's sandbox in your encrypted iCloud backup — that is entirely under Apple's privacy terms, and we never see its contents.
Sharing, export and import
When you tap Share or Export — sending a stem, an exported mix, a multitrack ZIP, or a recording to Messages, Mail, Voice Memos or another app — iOS hands the file to that app through the standard share sheet. From that point on, the receiving app's privacy policy applies.
MonoBand can also export your library, or any songs you select from it, into a single ZIP archive, and import such an archive back. Those archives are created and read entirely on your device; where you then choose to store or send one is up to you, and anything you put in iCloud Drive, another cloud service, or a messaging app is governed by that service's terms.
Children
MonoBand is suitable for users of any age and does not knowingly collect any personal information from anyone, including children under 13. There is no account to create and no personal data is transmitted off the device.
Changes to this policy
If we ever change how MonoBand handles data, we'll update this page and bump the "Last updated" date at the top. Any change that would meaningfully reduce your privacy will be called out in the app before it takes effect.
Contact
Questions about this policy? Email contact@mono.band.