Does 美投App work on iPhone Duo?

Yes. 美投App 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 美投App letterboxed on iPhone Duo?

No. 美投App fills the inner display.

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美投App

Name: 美投App
Author: meitou

meitouFinance

View in the App Store

On iPhone Duo

Fits

美投App 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 3.0.12
Build: iOS 27.1 SDK
uses Apple’s iPhone Duo APIs
Latest version: 3.0.12, Oct 28, 2026
Status updated: Oct 29, 2026

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Version history

Version 3.0.12Fits
iOS 27.1 SDK
Checked Oct 29, 2026

Sources

App Store build, version 3.0.12
Built with the iOS 27.1 SDK. Uses UIHingeInteraction and SwiftUI’s reservedRegions and toolbarVerticalEdge.