A small-pet health log that puts each record beside its history when open
Does Memoria work on iPhone Duo?
Yes. Memoria'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, posting as すなガジェ on X on October 10, 2026 with a video of the app closed and open on iPhone Duo; the post says Duo support is coming (@Suna_gadget on X). The App Store seller is Chikara Matsuo (id 6762068300, Japanese store). Version 3.2.20 (released October 22, 2026) lists "iPhone Duo に対応" (supports iPhone Duo) in its release notes.
Adapted for the fold
- Closed · Outer display
The usual home page, closed
Closed, the cover shows the same home page as on any iPhone, and folding the open phone keeps the pet you were looking at.
- Open · Inner display
One pet beside the family
Open flat, the home page puts the chosen pet on the left and every pet on the right; a weight entry sits beside the list of pets to switch between, a month's calendar beside the chosen day's record, photos fill a wide grid, and a timeline of every pet since 2001 spans both halves.
About Memoria
Memoria is a care log for gerbils and other small pets: weight, food, droppings, medicine, vet visits, photos and notes, linked together and shared with the family. Its developer posted a video of the iPhone Duo version, and the release notes for version 3.2.20 (October 22, 2026) say it now supports the iPhone Duo. Closed, the cover keeps the familiar home page. Open flat, each screen splits in two: one pet beside all of them, a weight entry beside the other pets, the calendar beside that day’s record. Favourite photos and a timeline of the whole family since 2001 spread across both halves, and folding the phone keeps the pet you were looking at.
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 3.2.20 (released October 22, 2026) mention iPhone Duo: "iPhone Duo に対応"
App version: 3.2.20.
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 ↗
On the ideas wall
All ideas
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/memoria/"><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: Memoria on the App Store (apps.apple.com) · Memoria on X (x.com)
More for iPhone Duo
JoyJar
ReAlign Leadership LLC
A shared gratitude jar: open the Duo and the jar faces a joy from it, like a book
Simulator verified: ReAlign Leadership LLC, the developer, in a submission to FoldHunt on October 21, 2026, with a plain screen recording of the app on the iPhone Duo simulator (iOS 27.1) on YouTube and a page about the Duo layouts (joyjar.app). JoyJar is coming soon to the App Store and Google Play.
- Open
- Book
- Closed
- Split View
Penjo: Pencil Journal, Planner
Zafer ARICAN
A handwritten journal: today's page on one side of the fold, today's plans on the other
Simulator verified: Zafer ARICAN, the developer, in a submission to FoldHunt on October 20, 2026, with simulator screenshots and recordings on the Penjo site (penjoapp.com). The release notes for version 3.8 (released October 20, 2026) say Penjo is now optimized for iPhone Duo in every pose: open, the page uses Penjo's iPad layouts; in the book and seated poses it stays clear of the fold; fold it shut and the journal closes.
- Book
- Open
- Closed
- Standing
Megu: SI Closet & Planner
JA Technology Consulting LLC
A digital closet and AI stylist, with the piece you tap beside the grid when open
Simulator verified: Jake Antebi, the founder of Megu, in an email to FoldHunt on October 22, 2026, saying Duo support is live with a layout designed for the unfolded screen, and in a post on the Megu blog on October 19, 2026 saying the Duo layouts arrived in version 1.6. The press kit holds unframed captures of the app on the Duo's cover and open display, at the simulator's screen sizes. The App Store seller is JA Technology Consulting LLC. The release notes for version 1.8 (released October 22, 2026) say: "Improvements for iPhone Duo."
- Closed
- Open
- Book