An audiobook player, with Settings and the selected page on either side of the fold
Does BookPlayer work on iPhone Duo?
Duo support is merged but not in the App Store yet: a pull request from BookPlayer's maker puts Settings beside the selected page on the open and half-folded Duo, checked in the simulator.
- App Store confirmedGianni Carlo, BookPlayer's creator and maintainer, in pull request 1647 on GitHub (posted October 14, 2026, merged October 15): open or half-folded, Settings and the selected page sit side by side, and the maker tried the change in the iPhone Duo simulator. The App Store still has version 5.22.2, from October 7.
Adapted for the fold
- Closed · Outer display
One page at a time
The maker says the cover keeps the existing Settings list and back-button navigation.
- Open · Inner display
Settings beside the selected page
Open, the proposed layout shows the Settings list and the selected page together. Turned upright, the open display still shows one page at a time.
- Book · Partly folded
Put the fold between the panes
Half-folded, Gianni Carlo says, the fold separates Settings from the selected page.
About BookPlayer
BookPlayer plays audiobooks imported from files and personal media servers. A merged pull request from its maker, Gianni Carlo, rearranges Settings for the Duo: open or half-folded, the list sits on one side of the fold and the selected page on the other. The maker has checked it in the simulator, but the change isn’t in an App Store release yet.
Evidence reviews
What we checked, when, and what the evidence establishes. Each record preserves the support label at that check.
· App Store page reviewed
App Store confirmed · iphone-duo
The App Store release notes for version 6.0.0 (released October 22, 2026) mention iPhone Duo: "Improvements – We're ready for the iPhone Duo!"
App version: 6.0.0.
Store text only: we haven't seen the app running, and the store page doesn't show how each pose is used.
View reviewed evidence ↗· Developer statement reviewed
Developer claimed · iphone-duo
Read that pull request 1647 was merged on October 15, 2026, after the earlier review. It describes Settings beside the selected page on the open and half-folded Duo and reports checks in the iOS 27.1 simulator.
Poses shown: Open, Book. These are observations of the evidence, not a test of every interaction.
App version: Not recorded in this evidence. Environment: Developer-reported iPhone Duo simulator, iOS 27.1.
Written developer test report only; no screenshots, recordings or build reviewed. The change is merged but the App Store still has 5.22.2, from October 7, so it isn't in a release.
View reviewed evidence ↗· Developer statement reviewed
Developer claimed · iphone-duo
Read maintainer Gianni Carlo's October 14 pull request. It describes Settings beside the selected page on the open and half-folded Duo, with the fold between the panes, and reports checks in the iOS 27.1 simulator.
App version: Not recorded in this evidence. Environment: Developer-reported iPhone Duo simulator, iOS 27.1.
Written developer test report only; no screenshots, recordings or build reviewed. Pull request 1647 is still open. Turned upright, the open display keeps a single navigation stack; the new Settings layout is not confirmed in an App Store release.
View reviewed evidence ↗
Related guides
iPhone Duo poses: closed, open, book, standing and Split View
A plain-language guide to the ways you will hold iPhone Duo, what the phone itself does in each, and the apps and ideas that make the most of them. For anyone buying one, and for anyone building for it.
The best iPhone Duo apps so far (October 2026)
The apps worth installing now that iPhone Duo is on sale, from the apps Apple named as launch partners to indie apps whose developers have shown a real iPhone Duo layout, picked for what they do when you open the phone.
Do your apps work on iPhone Duo? What happens before they're updated
Every iPhone app opens on iPhone Duo, but only updated ones fill the inner display. What an app looks like before its developer adapts it, how to tell which are ready, and which popular apps have said so.
Is this your app?
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Sources: BookPlayer pull request 1647 on GitHub (github.com) · BookPlayer on the App Store (apps.apple.com)
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