A Persian calendar that shows the day's details beside the month when open
Does ShamsiCal work on iPhone Duo?
Yes, according to the developer. ShamsiCal 4.6, released on October 9, 2026, adds support for iPhone Duo, with the calendar and the day's holidays side by side when the phone is open in landscape.
- App Store confirmedThe developer, Alireza Khoddam (@alirezza), in a post on X in Persian saying the update with iPhone Duo support is out, with pictures (@alirezza on X). The App Store seller is Alireza Khoddam (id 918251515). The notes for version 4.6 (released October 9, 2026) say it adds support for iPhone Duo.
Adapted for the fold
- Closed · Outer display
The calendar, with a rail of buttons
Closed, the months scroll by down the cover, with Today, the date converter, events and a new event in a rail along the edge. Tap a day to open its details.
- Open · Inner display
The day beside the month
Open in landscape, the chosen day's holidays and events sit on the left and the calendar on the right. Open and upright, the calendar fills the screen and a day's details open when you tap it.
About ShamsiCal
ShamsiCal is a Persian (Solar Hijri) calendar by Alireza Khoddam. Version 4.6 adds iPhone Duo support. In the developer’s pictures, the closed phone shows the months scrolling by with a rail of buttons down the side, and the open phone in landscape shows the chosen day’s holidays, such as Nowruz, beside the calendar. The release notes add that the calendar keeps your place and the day you picked when you fold, unfold or turn the phone.
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 4.6 (released October 9, 2026) mention iPhone Duo: "Adds support for iPhone Duo - Layout: Unfold your phone and turn it sideways to see the calendar and the day's holidays and events side by side."
App version: 4.6.
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/shamsical/"><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: Alireza Khoddam on X (Persian) (x.com) · ShamsiCal on the App Store (apps.apple.com)
More for iPhone Duo
KeepCount
Tyler Hillsman / 1881 Digital, LLC
A board of tally counters: half-folded, counts sit above the fold and the buttons below
Simulator verified: Tyler Hillsman, the developer, in a submission to FoldHunt on October 17, 2026, with an unframed screenshot of the app in the iPhone Duo simulator in the press kit (keepcount.app). The App Store seller is 1881 Digital, LLC. The release notes for version 1.8 (released October 12, 2026) say KeepCount now adapts to the iPhone Duo's inner and outer displays, with a tabletop layout when it's partly folded.
- Book
- Closed
- Open
Calc Pro - The Best Calculator
Panoramic Software Inc.
Ten calculators and converters, with the tape of results beside the calculator when open
Simulator verified: Panoramic Software Inc., the developer, in a submission to FoldHunt on October 18, 2026, and in the App Store release notes for version 7.0.6 (released October 12, 2026), which describe the closed and open layouts. The app's page on the developer's website has pictures of both on the iPhone Duo.
- Closed
- Open
Sticky Widgets
Tyler Hillsman / 1881 Digital, LLC
Sticky notes as widgets, with a larger library and side-by-side editing on the Duo
Simulator verified: Tyler Hillsman, the developer, in the App Store release notes for version 5.4.0 (released October 13, 2026), which add iPhone Duo support with a larger library and side-by-side editing, and in a submission to FoldHunt on October 17, 2026, with an unframed screenshot of the app in the iPhone Duo simulator in the press kit (stickywidgets.app). The App Store seller is 1881 Digital, LLC; the App Store pictures show ordinary iPhones and iPads.
- Open