The smart home app tells your home how far the Duo is open, and fits the cover
Does Home Assistant work on iPhone Duo?
Yes. Home Assistant'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 release notes for version 2026.10.0, repeated in 2026.10.1 (released October 11, 2026): "iPhone Duo hinge and pose sensors" and "Better layout on iPhone Duo". The changes were made in the open-source app by Bruno Pantaleão Gonçalves (GitHub pull requests 5862 and 5917); the screenshots in 5917 show the tab bar in the cover's side column. Found through a post by elektrologisch.ch on X on October 11, 2026, with a screenshot of the 2026.10.0 notes. The App Store seller is Nabu Casa, Inc (id 1099568401).
Adapted for the fold
- Closed · Outer display
Tabs in the side column
Closed, with the experimental native tab bar turned on, the tab buttons, profile picture and notifications bell sit in the column down the side of the cover.
About Home Assistant
Home Assistant’s companion app connects to your own Home Assistant server. Version 2026.10 adds three optional sensors for folding iPhones: the hinge angle in degrees, whether it is closed, partly open or fully open, and a pose such as book, laptop or flat, so a home automation can react to how the phone is opened. It also brings a better layout on the Duo: closed, in the app’s experimental native tab bar, the tab buttons, profile picture and notifications bell sit in the column down the side of the cover.
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 2026.10.2 (released October 21, 2026) mention iPhone Duo: "Improvements for iPhone Duo UI - Improved Local Push reliability"
App version: 2026.10.2.
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 ↗
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?
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Sources: Home Assistant on the App Store (apps.apple.com) · Add hinge angle and hinge status sensors for folding iPhones (GitHub) (github.com) · Show tab bar buttons in the iPhone Duo vertical bar (GitHub) (github.com) · elektrologisch.ch 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