Is Pill & Period Tracker letterboxed on iPhone Duo?

Apps that are not rebuilt with the iOS 27.1 SDK show black borders on the inner display. Current status: Work in progress.

All apps

Pill & Period Tracker

Name: Pill & Period Tracker: Pilll
Author: yudai hirose

yudai hiroseUtilities

View in the App Store

On iPhone Duo

Work in progress

iPhone Duo support for Pill & Period Tracker is in progress.

Fixes for both iPhone Duo displays were merged on October 9. The App Store version from September 14 doesn’t have them yet.[1]

How we know: From the app’s source code
Latest version: 202609.14.152816, Sep 14, 2026
Status updated: Oct 20, 2026

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Sources

GitHub: Pilll pull request #1900 (iPhone Duo layout fixes)

Have an iPhone Duo?

Tell us what Pill & Period Tracker looks like on yours.

When unfolded, it…FitsFills the inner screenPartly fitsSome screens are letterboxedLetterboxediPhone-sized window with black barsHas issuesBugs or broken featuresDoesn’t workCrashes or can’t be used

Version OptionalShown on the app’s App Store page under Version History.

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Developer of Pill & Period Tracker?Rebuild with the iOS 27.1 SDK, fix the layout and earn the App Store badge.

Work in progress

What owners report

Sources

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