Does Slopes work on iPhone Duo?

Yes. Slopes 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 Slopes letterboxed on iPhone Duo?

No. Slopes fills the inner display.

All apps

Slopes

Name: Slopes: Ski & Snowboard
Author: Breakpoint Studio LLC

Breakpoint Studio LLCVideo & TV

View in the App Store

On iPhone Duo

Fits

Slopes 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 2026.16
Build: iOS 27.1 SDK
uses Apple’s iPhone Duo APIs
Latest version: 2026.16, Oct 10, 2026
Status updated: Oct 27, 2026

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Version history

Version 2026.16Fits
iOS 27.1 SDK
Checked Oct 27, 2026

Sources

App Store build, version 2026.16
Built with the iOS 27.1 SDK. Uses UIHingeInteraction, UIView.reservedRegions and systemTraitsAffectingVerticalBarEdge.
App Store: Slopes 2026.16 release notes