Does Mockup & Demo Maker work on iPhone Duo?

Yes. Mockup & Demo Maker 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 Mockup & Demo Maker letterboxed on iPhone Duo?

No. Mockup & Demo Maker fills the inner display.

All apps

Mockup & Demo Maker

Name: Mockup & Demo Maker: Screeny
Author: Lazare Kolebka

Lazare KolebkaUtilities

View in the App Store

On iPhone Duo

Fits

Mockup & Demo Maker 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 2.0.1
Build: iOS 27.1 SDK
uses Apple’s iPhone Duo APIs
Latest version: 2.0.1, Oct 24, 2026
Status updated: Oct 27, 2026

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Version history

Version 2.0.1Fits
iOS 27.1 SDK
Checked Oct 27, 2026

Sources

App Store build, version 2.0.1
Built with the iOS 27.1 SDK. Uses SwiftUI’s onHingeChange, reservedRegions and toolbarVerticalEdge.