White, pink and brown noise, and a red reading light on one half when stood as a tent
Does Light Noise work on iPhone Duo?
Its developer says so: the whole app runs on the cover, the open display fills edge to edge, and as a tent one half becomes a red reading light. We haven't seen it running.
- Developer claimedBernardo Nunez, the developer, in a submission to FoldHunt on October 26, 2026, describing the cover, open and tent layouts. The App Store seller is Bernardo Nunez Rojas. The release notes for version 1.2 (released October 17, 2026) don't mention the Duo.
Adapted for the fold
- Closed · Outer display
The whole app on the cover
Closed, start white, pink or brown noise, set the sleep timer or turn it off without opening the phone.
- Open · Inner display
Edge to edge, open
Unfolded, the timer and the noise color fill the inner display, upright or sideways, instead of a phone-sized window with black borders.
- Standing · Hands-free
A red light for reading
Stand it as a tent on the nightstand: one half keeps the noise color and the other becomes a red light for reading in the dark.
About Light Noise
Light Noise is a white noise app by Bernardo Nunez. Pick white, pink or brown noise and it plays as long as you need, with no ads and a seamless loop, and a sleep timer turns it off.
On iPhone Duo, the developer says, the whole app runs on the cover, and open, the timer and the color fill the inner display instead of a letterboxed window. Stood as a tent on a nightstand, one half shows the noise color and the other becomes a red light for reading.
Related guides
iPhone Duo poses: closed, open, book, standing and Split View
A plain-language guide to the ways you will hold iPhone Duo, what the phone itself does in each, and the apps and ideas that make the most of them. For anyone buying one, and for anyone building for it.
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.
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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