An offline AI chat app that keeps its answer going when you fold or unfold
Does AIでチャット work on iPhone Duo?
Yes. AIでチャット's App Store page says it supports iPhone Duo, so the update is out. FoldHunt's editor hasn't seen it running yet.
- App Store confirmedThe developer, in the Japanese release notes for version 1.0.17 (released October 11, 2026), which say it supports iPhone Duo: closed or open, the buttons rearrange to fit the screen's orientation, and an answer being written and your scroll position carry on when you open or close the phone. KY Studio, the developer's account on X, announced it on October 11, 2026, saying the display switches to fit the screen whether the phone is open or closed (@kystudio_jp on X). The app is on the Japanese App Store, not the US one. There are no pictures of it on the Duo yet. The App Store seller is Kazuhiro Yoshimitsu (id 6756705802).
Adapted for the fold
We're waiting on details of exactly what AIでチャット changes for the fold. Are you the developer? Tell us.
About AIでチャット
AIでチャット (Chat with AI) is a Japanese chat app that runs open AI models from Hugging Face entirely on the phone, with no internet connection needed, and tells you which models your device can handle. Version 1.0.17 supports iPhone Duo, the release notes say: the buttons rearrange to fit the screen’s orientation, closed or open, and an answer that’s still being written keeps going, at the same scroll position, when you fold or unfold. There are no pictures of it on the Duo 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 description mentions iPhone Duo: "iPadは2カラム表示、iPhone Duoは開閉に合わせた配置" (version 1.0.19, released October 21, 2026).
App version: 1.0.19.
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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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: KY Studio on X (x.com) · AIでチャット on the App Store (apps.apple.com)
More for iPhone Duo
KeepCount
Tyler Hillsman / 1881 Digital, LLC
A board of tally counters: half-folded, counts sit above the fold and the buttons below
Simulator verified: Tyler Hillsman, the developer, in a submission to FoldHunt on October 17, 2026, with an unframed screenshot of the app in the iPhone Duo simulator in the press kit (keepcount.app). The App Store seller is 1881 Digital, LLC. The release notes for version 1.8 (released October 12, 2026) say KeepCount now adapts to the iPhone Duo's inner and outer displays, with a tabletop layout when it's partly folded.
- Book
- Closed
- Open
Calc Pro - The Best Calculator
Panoramic Software Inc.
Ten calculators and converters, with the tape of results beside the calculator when open
Simulator verified: Panoramic Software Inc., the developer, in a submission to FoldHunt on October 18, 2026, and in the App Store release notes for version 7.0.6 (released October 12, 2026), which describe the closed and open layouts. The app's page on the developer's website has pictures of both on the iPhone Duo.
- Closed
- Open
Sticky Widgets
Tyler Hillsman / 1881 Digital, LLC
Sticky notes as widgets, with a larger library and side-by-side editing on the Duo
Simulator verified: Tyler Hillsman, the developer, in the App Store release notes for version 5.4.0 (released October 13, 2026), which add iPhone Duo support with a larger library and side-by-side editing, and in a submission to FoldHunt on October 17, 2026, with an unframed screenshot of the app in the iPhone Duo simulator in the press kit (stickywidgets.app). The App Store seller is 1881 Digital, LLC; the App Store pictures show ordinary iPhones and iPads.
- Open