Weather app that compares tomorrow with today, with adaptive layouts for iPhone Duo
Does Thermo Diem work on iPhone Duo?
Yes, the developer says so: version 3.7 (released October 18, 2026) adds native iPhone Duo support, with adaptive layouts for expanded, folded and tabletop use.
- App Store confirmedThe Thermo Diem account on X: "Getting ready to submit 3.6 (iPhone Duo Support)". The picture with that post is a labelled design render. On October 11, 2026 the account posted four pictures of the app on the Duo (@ThermoDiem on X). The App Store seller is Mickey DeLorenzo (id 912968904). The release notes for version 3.7 (released October 18, 2026) say it adds native support for iPhone Duo, with adaptive layouts for expanded, folded and tabletop use.
Adapted for the fold
- Closed · Outer display
One big verdict
Closed, the cover is one big verdict, such as "much cooler than this time yesterday" or "much warmer than right now" for tomorrow, above the feels-like temperature.
- Book · Partly folded
The verdict beside the hourly curve
Opened like a book, the verdict sits on the left half and the hourly curve, comparing today with tomorrow, on the right, with more tools below it.
- Open · Inner display
The curve under the verdict
Open flat and held upright, the hourly curve runs under the verdict.
About Thermo Diem
Thermo Diem tells you how tomorrow’s temperature compares with today’s. Its makers showed it on the Duo before version 3.7 shipped: closed, the cover is one big verdict such as “much cooler”; opened like a book, the verdict sits beside an hourly curve. The App Store release notes for 3.7 say it adds native iPhone Duo support with adaptive layouts for expanded, folded and tabletop use.
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 3.8 (released October 20, 2026) mention iPhone Duo: "Native support for iPhone Duo, with adaptive layouts for expanded, folded, and tabletop use"
App version: 3.8.
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
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.
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/thermo-diem/"><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: Thermo Diem on X (x.com) · Thermo Diem on the iPhone Duo (X) (x.com)
More for iPhone Duo
Tide Guide
Condor Digital
Tides at a glance closed; open, charts, weather and live radar in one view
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 27.1.2 (released October 24, 2026) say: "Meet Tide Guide for iPhone Duo! Check the tide at a glance, then unfold for a closer look at charts, weather, and solunar details. An all-new map puts real-time radar alongside your tide stations."
- Closed
- Open
Please Don't Rain
Chris Wu
A weather app that brings its iPad layout to the open Duo and splits at the half-fold
Simulator verified: Chris Wu, the developer, in a submission to FoldHunt on October 16, 2026, saying it's ready for launch day, with screenshots of the app in the iPhone Duo simulator on the app's press page, on X and on Mastodon. The App Store seller is Christopher Wu (id 6444577668). The release notes for version 5.30 (released October 16, 2026) have a section on iPhone Duo support.
- Closed
- Open
- Book
SolarWatch
Fifteen Jugglers Software
A sun dial whose tiles step off the crease as you fold
Simulator verified: The developer, Engin Kurutepe, posted a video of SolarWatch's layout going from open flat to half-folded (@ekurutepe on X) and later a TestFlight build with iPhone Duo support (@ekurutepe on X).
- Open
- Book