Does Race Calendar & Live Timing work on iPhone Duo?

Yes. Race Calendar & Live Timing 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 Race Calendar & Live Timing letterboxed on iPhone Duo?

No. Race Calendar & Live Timing fills the inner display.

All apps

Race Calendar & Live Timing

Name: Race Calendar & Live Timing
Author: Krzysztof Hendzel

Krzysztof HendzelNews

View in the App Store

On iPhone Duo

Fits

Race Calendar & Live Timing 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 1.6.0
Build: iOS 27.1 SDK
uses Apple’s iPhone Duo APIs
Latest version: 1.6.0, Oct 16, 2026
Status updated: Oct 22, 2026

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Version history

Version 1.6.0Fits
iOS 27.1 SDK
Checked Oct 22, 2026

Sources

App Store build, version 1.6.0
Built with the iOS 27.1 SDK. Uses SwiftUI’s ArrangementView, SplitArrangementViewStyle, OverlayArrangementViewStyle and AutomaticArrangementViewStyle.