An EPUB and PDF reader, with two pages meeting at the fold on the open Duo
Does Comma Reading App work on iPhone Duo?
Yes, the developer says so: Comma 2.4 shows two pages meeting at the fold when the Duo is open and Paginated is selected.
- App Store confirmedThe developer, in the App Store description and the release notes for version 2.4: open, the Duo shows two pages meeting at the fold when Paginated is selected.
Adapted for the fold
We're waiting on details of exactly what Comma Reading App changes for the fold. Are you the developer? Tell us.
About Comma Reading App
Comma reads EPUB and PDF books, with highlights and read-aloud. Version 2.4 adds iPhone Duo support, the release notes say: open, with Paginated selected, two pages meet at the fold.
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 2.4 (released October 10, 2026) mention iPhone Duo: "iPhone Duo"
App version: 2.4.
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 ↗
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Is this your app?
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Sources: Comma Reading App on the App Store (apps.apple.com)
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Korean webtoons and web novels, to read on the larger display of the open Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 26.102.0 (released October 22, 2026) don't mention the Duo.
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Simulator verified: Jihoon Suh, on the Vertically Verse iPhone Duo page (vertically.works), with captures from the Xcode 27.1 simulator. The App Store seller is Jihoon Suh.
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Audiobook player whose reader shows two facing pages on the open Duo
Simulator verified: Donovan Montoya, the developer, merged Duo support into the app's public code (github.com) and later crease fixes with Duo simulator screenshots of the reader (github.com); the changelog listed it for version 1.3.0. The App Store version, 1.3.1 (released October 19, 2026), does not mention the Duo in its release notes.
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