Does Headings work on iPhone Duo?
Probably. The release notes for Headings 1.3.15 (November 5, 2026) mention iPhone Duo. No owner has reported how it runs yet.
Tried Headings on your Duo? Be the first to reportNobody has reported how this app runs on iPhone Duo yet.
Tried it on a Duo? Your report sets the first status.
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From recent reports. “Didn't try” answers aren't counted.
App Store updates
Mentions iPhone Duo: “Previous update for iPhone Duo and iPad OS27 compatibility mistakenly also asked Mac users to rotate their screen to play...”
Mentions iPhone Duo: “Update for iOS27 compatibility (iPhone Duo and iPad will ask for fullscreen landscape mode)”
Checked every few hours. Only builds made with the iOS 27.1 SDK, accepted since October 5, 2026, can use the whole inner display. Owner reports confirm whether an update did.
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Badge for developers
[](https://isitduoready.com/app/headings-air-traffic-control)
<a href="https://isitduoready.com/app/headings-air-traffic-control"><img src="https://isitduoready.com/app/headings-air-traffic-control/badge.svg" alt="iPhone Duo status of Headings" height="20"></a>
Shows Headings's current status and updates by itself. Add it to your README, website or press kit.