Privacy

Duo Sampler, by Quarterspeak. Updated 11 November 2026.

The short version

Your music stays yours. There's no account and no sign-in. Your songs, sounds and recordings stay on your phone. If you leave "Share anonymous usage" on, the app sends us anonymous notes about how it's used and any crashes. Those notes can't be linked to you, and you can turn them off at any time.

Your songs, sounds and recordings

• Everything you make is stored on your iPhone, along with any sounds you import. Your phone's own backups (iCloud or your computer) include it in the usual way.
• The microphone is used only while you're recording a sound, and recordings stay on your phone.
• In a band, nearby phones on your local network share the song and the sounds in it directly with each other, so everyone can play. Nothing goes through our servers.
• When you share a song, it goes only where you send it.

Anonymous usage and diagnostics

If "Share anonymous usage" is on in Settings (it is unless you turn it off), Duo Sampler sends us anonymous notes about how the app is used: which features are opened, how long things take, where the app is left, the app's version, your phone's model and iOS version, and crash and performance reports. They help us find what's confusing or broken and make the app better.

These notes never include your songs, sounds, recordings, song or sound names, anything you type, your contacts, your location, or your name, email or Apple ID. They're tied only to a random number the app makes for itself, which can't be linked to you. They aren't used for advertising, aren't sold, and aren't shared with anyone else. They're stored with our database provider, Supabase.

Turn "Share anonymous usage" off at any time: the app stops sending, deletes what it was keeping, and starts with a new random number if you ever turn it back on.

Purchases

Duo Sampler Pro and the Duo Sampler Membership are bought through Apple. Apple handles the payment, and we never see your card or Apple Account details. You can manage or cancel a membership in your Apple Account settings.

Children

Duo Sampler doesn't ask for or collect personal information from anyone, including children.

Changes and questions

If this policy changes, the new version will be posted here with a new date. Questions: see Support.