A free calorie and macro tracker with layouts for the open and closed Duo
Does FoodieCalc work on iPhone Duo?
According to its developer, yes. FoldHunt's editor hasn't checked FoodieCalc on iPhone Duo yet, so it's listed as a claim.
- Developer claimedNikos Galinos, the developer, in a Reddit post on October 10, 2026 saying FoodieCalc now has "support for iPhone Duo" (reddit.com), and on the app's website, which shows it on the Duo closed and open: "Fold it, open it, or rotate it—the interface reorganizes instead of simply shrinking." The current version on the App Store, 1.5.1 (released September 27, 2026), doesn't mention the Duo, and neither does the description. The App Store seller is Nikos Galinos (id 6792482391).
Adapted for the fold
- Closed · Outer display
The day in one column
Closed, the dashboard stacks the calorie ring above the three macro rings and the streak card, and the diary shows the week's dates, the day's total and the meals, with the tabs in the column down the side of the cover.
- Open · Inner display
A grid and two panes
Open in landscape, the dashboard sets calories and macros beside the streak card with micronutrients below, and the diary puts the dates and the day's total in their own column beside the meals.
About FoodieCalc
FoodieCalc is a free nutrition tracker with no ads or subscription: log food by photo, voice, barcode or search, track calories, macros, water and weight, and sync with Apple Health. Its developer says it supports iPhone Duo, and the website shows how: closed, the dashboard and the diary each stack in one column beside the cover’s side bar; open in landscape, the dashboard becomes a grid and the diary puts the dates and day’s total in a column beside the meals.
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: FoodieCalc on the App Store (apps.apple.com) · FoodieCalc on r/iosapps (reddit.com) · FoodieCalc (itworksonmymac.com)
More for iPhone Duo
SmartGym
SmartGym
Workout tracker with a layout for every pose, the routine and the exercise side by side
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 8.1 (released October 16, 2026) say: "SmartGym is ready for iPhone Duo, with an interface that adapts as you fold, unfold and move through your workout. EVERY POSE Enjoy layouts designed for every pose: Closed, Book Style, Fully Opened, Seated and Tent."
- Book
- Open
- Standing
Blankie
Cody Bromley
Mix rain, waves and noise in any pose, or set it half folded as a bedside sound machine
Simulator verified: Cody Bromley, the developer, in a submission to FoldHunt on October 28, 2026, and in Blankie's iPhone Duo guide, with captures from the simulator. The App Store seller is Cody Bromley. The release notes for version 2.1.0 (released October 27, 2026) add support for iPhone Duo.
- Book
- Closed
- Standing
- Split View
Meditation Timer - Zenitizer
Manuel Kehl
A meditation timer that starts when you stand the Duo up like a tent, like an hourglass
Simulator verified: Manuel Kehl, the developer, in a submission to FoldHunt on October 21, 2026, with unframed captures from the iPhone Duo simulator in the press release (impresskit.net) and a walkthrough on YouTube. The release notes for version 1.18 (released October 20, 2026) bring full iPhone Duo support, with layouts for the inner and outer displays, the fold and landscape, and a meditation that starts when you stand the phone up like a tent.
- Standing
- Open
- Book
- Closed