Does SpektraLab work on iPhone Duo?

Yes. SpektraLab 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 SpektraLab letterboxed on iPhone Duo?

No. SpektraLab fills the inner display.

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SpektraLab

Name: SpektraLab
Author: 瀚泽 邱

瀚泽邱Photo & video

View in the App Store

On iPhone Duo

Fits

SpektraLab 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 1.0.1
Build: iOS 27.1 SDK
uses Apple’s iPhone Duo APIs
Latest version: 1.0.1, Oct 28, 2026
Status updated: Oct 29, 2026

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Version history

Version 1.0.1Fits
iOS 27.1 SDK
Checked Oct 29, 2026

Sources

App Store build, version 1.0.1
Built with the iOS 27.1 SDK. Uses AVCaptureDeviceDirectionCoordinator, the inner and outer ultra-wide camera types, and SwiftUI’s reservedRegions and toolbarVerticalEdge.