A live earthquake map with layouts for the half-folded and standing Duo
Does Seismic tracker work on iPhone Duo?
According to its developer, yes. FoldHunt's editor hasn't checked Seismic tracker on iPhone Duo yet, so it's listed as a claim.
- Developer claimedThe developer, in the release notes for version 4.3 (released October 10, 2026), repeated in version 4.3.1 (released October 11, 2026): "Adaptive iPhone Duo layouts for book, laptop and tent views." The notes don't describe them. There are no pictures of it on the Duo yet. The App Store seller is Raphael Lesourd (id 6740165946).
Adapted for the fold
We're waiting on details of exactly what Seismic tracker changes for the fold. Are you the developer? Tell us.
About Seismic tracker
Seismic tracker maps earthquakes around the world as they happen, with filters, a 3D globe and a replay of recent quakes. Version 4.3 adds adaptive iPhone Duo layouts for book, laptop and tent views, the release notes say, without saying what changes in each. There are no pictures of it on the Duo yet.
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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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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