Support

Duo Sampler, by Quarterspeak.

Contact

Questions, bugs or ideas: email hello@duosampler.com. Tell us your iPhone model and what you were doing, and we'll get back to you.

Restore Pro or the membership

Open any lock in the app (pads 9 to 16, for example) or Settings > Duo Sampler, then tap Restore. Use the same Apple Account you bought with.

Cancel the membership

Open the Settings app, tap your name, then Subscriptions, then Duo Sampler. A member can also tap Manage membership in the app. Cancel at least 24 hours before it renews. Pro, if you bought it, stays yours either way.

Use a code

Open any lock in the app and tap Have a code?, or open the code link you were given on your iPhone. Pro unlocks by itself.

Play in a band

Up to four phones in the same room, on the same Wi-Fi. Allow Duo Sampler to find devices on your local network when your iPhone asks. Then tap Band on each phone. If one phone has Pro, everyone in the band can use everything while you play together.

Requirements

iOS 27. Made for iPhone Duo, where each pose of the phone plays differently, and it works on other iPhones too.