An offline AI dictionary and encyclopedia for text and image questions
Does Define: AI Dictionary work on iPhone Duo?
Yes, the developer says so: the App Store release notes for Define 1.3 mention iPhone Duo support.
- App Store confirmedThe developer, in the App Store release notes for version 1.3, which add iPhone Duo support without describing the layout. The App Store seller is Thye Chean Lim.
Adapted for the fold
We're waiting on details of exactly what Define: AI Dictionary changes for the fold. Are you the developer? Tell us.
About Define: AI Dictionary
Define answers questions about words, topics and images using Apple Intelligence, so it needs a compatible device. Version 1.3 adds iPhone Duo support, the release notes say, without describing a new layout.
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 1.3 (released October 7, 2026) mention iPhone Duo: "Supports iPhone Duo."
App version: 1.3.
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 the Duo support statement in the release notes for version 1.3 and looked at the current App Store images.
App version: 1.3.
The gallery shows ordinary phone and tablet views. No identifiable Duo capture, app build or folding behavior was tested.
View reviewed evidence ↗
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/define-ai-dictionary/"><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.
Sources: Define on the App Store (apps.apple.com) · Apple lookup: current version and seller (itunes.apple.com)
More for iPhone Duo
RectoVerso: Flashcards
Simon Pinkas
Flashcards whose answer arrives as you open the phone: stop as soon as you know it
Simulator verified: Simon Pinkas, the developer, in a submission to FoldHunt on October 22, 2026, describing the closed, opening, half-folded, open and Split View layouts. The press kit has screenshots set in Apple's iPhone Duo artwork. RectoVerso came out on the App Store on October 23, 2026, at version 1.0.2: its description has an On iPhone Duo section, and the release notes mention opening iPhone Duo to reveal a figure's labels and Stats showing its chart beside the summary on the open, upright phone.
- Closed
- Book
- Open
- Split View
Facing Pages
DM Solutions and Development LLC
Bilingual stories that open like a book, the language you're learning beside your own
Simulator verified: DM Solutions and Development, the developer, in a submission to FoldHunt on October 15, 2026, saying it will be ready on launch day, with a recording of version 1.0 in the iPhone Duo simulator on YouTube. The app is on the App Store as Facing Pages: Learn Languages (version 1.0.2, first released October 19, 2026), and its description has a "MADE FOR IPHONE DUO" section.
- Closed
- Open
- Book
Fretalus
Individuation Labs LLC
Quick quizzes for the guitar fretboard and chords, with the question beside its answers
Simulator verified: Individuation Labs, the developer, in a submission to FoldHunt on October 27, 2026, and on the Fretalus website, with App Store screenshots from the iPhone Duo simulator. The App Store seller is Individuation Labs LLC. The release notes for version 1.4.2 (released October 24, 2026) say that on an unfolded iPhone Duo the question sits beside its answers.
- Open
- Closed