Places on one half, the chosen city's weather on the other
Does Mercury Weather work on iPhone Duo?
According to its developer, yes. FoldHunt's editor hasn't checked Mercury Weather on iPhone Duo yet, so it's listed as a claim.
- Developer claimedMalin Sundberg posted a picture labeled Mercury Weather for iPhone Duo (@malinsundberg on X). Malin's X profile says Malin builds Mercury Weather, the App Store description quotes Malin from Triple Glazed Studios, and the seller is Triple Glazed Studios LLC (id 1621800675). Version 3.7.2 (released 2026-09-22) does not mention the Duo, and neither does the description. The picture is marked October 23.
Adapted for the fold
- Closed · Outer display
One city on the cover
Closed, the cover is a single city: the temperature, the conditions, and the day's hours.
- Open · Inner display
Places beside the forecast
Open, a list of places fills the left half. The place you pick, with its temperature and the next hours, fills the right.
About Mercury Weather
Mercury Weather is Triple Glazed Studios’ weather app. Malin Sundberg’s picture shows it on the iPhone Duo. Shut, one city’s conditions fill the cover. Open, a list of places sits beside the city you pick. The picture is marked October 23, and the App Store page does not mention the Duo.
On the ideas wall
All ideas
Related guides
The best iPhone Duo apps so far (October 2026)
The apps worth installing on day one, from Apple's four 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/mercury-weather/"><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: Malin Sundberg on X (x.com) · Mercury Weather on the App Store (apps.apple.com)
More for iPhone Duo
Environment
Vincent Neo
Singapore weather and air quality; on a table, the rain map stands above its controls
Developer claimed: Vincent Neo, the developer, in a post on X saying Environment will be updated for the Duo soon, with table top mode, and showing it closed, half-folded and open (@iVincentNeo on X). The current App Store version (1.7.1) does not mention the Duo.
- Closed
- Book
- Open
Sunshine Weather
Matt Kelsh
A scrolling weather chart that spreads across the open Duo, with your places beside it
Developer claimed: The developer, Matt Kelsh (@mattro.design), posted a video of Sunshine Weather on iPhone Duo on Bluesky with "Coming to an iPhone Duo near you" (bsky.app). The App Store seller is Matt Kelsh (id 6751937260). Version 1.1.0 (released September 21, 2026) does not mention the Duo, and neither does the description.
- Closed
- Open
Sunset Predictions: Alpenglow
Andrew Yates
Sunrise and sunset forecasts, with the scene above the map and time when half-folded
Developer claimed: Andrew Yates, the developer, in a post on X showing Alpenglow on the Duo half-folded and closed (@ay8s on X), and in the v12.1 press release, which says Duo support arrives on October 23, 2026. The current App Store version (12.0.3) does not mention the Duo; Andrew offers press a TestFlight build of v12.1.
- Book
- Closed