Does Unchaind work on iPhone Duo?

Yes. Unchaind has been updated for iPhone Duo and uses the full inner display. Its latest version is built with the iOS 27.1 SDK and uses Apple’s iPhone Duo APIs.

Is Unchaind letterboxed on iPhone Duo?

No. Unchaind fills the full inner display.

All apps

Unchaind

Name: Unchaind: Overcome Lust
Author: Rocapine

RocapineUtilities

View in the App Store

On iPhone Duo

Fits

Unchaind fills the inner screen and adapts when you fold.

Its latest version is built with the iOS 27.1 SDK and uses Apple’s iPhone Duo APIs.[1]

How we know: From the app’s build
Checked on: Version 1.15.0
Build: iOS 27.1 SDK
uses Apple’s iPhone Duo APIs
Latest version: 1.15.0, Nov 3, 2026
Status updated: Nov 5, 2026

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Version history

Version 1.15.0Fits
iOS 27.1 SDK
Checked Nov 5, 2026

Sources

App Store build, version 1.15.0
Built with the iOS 27.1 SDK. Uses systemTraitsAffectingVerticalBarEdge.