Does Sunset Predictions work on iPhone Duo?

Yes. Sunset Predictions is 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 Sunset Predictions letterboxed on iPhone Duo?

No. Sunset Predictions fills the inner display.

All apps

Sunset Predictions

Name: Sunset Predictions: Alpenglow
Author: Andrew Yates

Andrew YatesUtilities

View in the App Store

On iPhone Duo

Fits

Sunset Predictions 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 12.1.4
Build: iOS 27.1 SDK
uses Apple’s iPhone Duo APIs
Latest version: 12.1.4, Oct 25, 2026
Status updated: Oct 27, 2026

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Version history

Version 12.1.4Fits
iOS 27.1 SDK
Checked Oct 27, 2026

Sources

App Store build, version 12.1.4
Built with the iOS 27.1 SDK. Uses SwiftUI’s onHingeChange, reservedRegions and toolbarVerticalEdge, and systemTraitsAffectingVerticalBarEdge.
App Store: Sunset Predictions 12.1.4 release notes