A classic-book reader built around vertical swiping, updated for the Duo
Does Scuba work on iPhone Duo?
According to its developer, yes. FoldHunt's editor hasn't checked Scuba on iPhone Duo yet, so it's listed as a claim.
- Developer claimedThe developer, in the release notes for version 1.4.16 (released October 10, 2026): "We've made improvements across the app, including iPhone Duo support." The current version, 1.4.17 (released October 11, 2026), doesn't mention the Duo. There are no pictures of it on the Duo yet. The App Store seller is Tim Brown (id 6761863067).
Adapted for the fold
We're waiting on details of exactly what Scuba changes for the fold. Are you the developer? Tell us.
About Scuba
Scuba is a reader for classic books, with a curated store and a reading mode made for swiping up through short beats of the story, plus recaps of the story so far. Version 1.4.16 includes iPhone Duo support, the release notes say, without describing the layout. There are no pictures of it on the Duo yet.
Related guides
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?
Add the badge to your site or press kit. It links back to this page, where fans can upvote you.
<a href="https://foldhunt.com/apps/scuba/"><img src="https://foldhunt.com/badges/featured-on-foldhunt.svg" alt="Featured on FoldHunt" width="220" height="54"></a>Need to update the listing? Email the editor.
More for iPhone Duo
NAVER SERIES
NAVER WEBTOON
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.
- Open
Vertically Verse
Jihoon Suh
Bible reader in vertical text that opens into a right-bound book spread.
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.
- Closed
- Open
- Book
OperaLibre
Donovan Montoya
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.
- Open
- Book