Ten calculators and converters, with the tape of results beside the calculator when open
Does Calc Pro - The Best Calculator work on iPhone Duo?
Yes, and seen in the simulator: closed, the controls move into a side bar; open, Calc Pro spreads across both halves iPad-style, with a tape of results beside the calculator.
- Simulator verifiedPanoramic 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.
Adapted for the fold
- Closed · Outer display
A side bar for the controls
Closed, it is the calculator you know from the iPhone, with the controls moved into a side bar so the calculator gets the full height of the display.
- Open · Inner display
An iPad-style layout across both halves
Open, Calc Pro spreads across both halves as it does on an iPad. A rail of calculators runs down the left, the calculator sits in the middle, the tape of past results sits right beside it, and buttons for email, copy, clear, settings and the in-app store run down the right edge. Every calculator, the options, the in-app store and the About screen are in reach without scrolling.
About Calc Pro - The Best Calculator
Calc Pro combines ten calculators with 23 financial worksheets: standard, scientific with RPN, base conversions, graphing, unit and currency converters, constants, financial, statistics and date and time. The currency converter covers more than 165 world currencies and 50 cryptocurrencies with live rates and price history, and the unit converter has more than 6,000 conversions. It’s free with ads, and an in-app purchase unlocks Pro Premium.
Version 7.0.6 is made for the iPhone Duo. Closed, the controls move into a side bar, so the calculator gets the full height of the display. Open, Calc Pro spreads across both halves in an iPad-style layout, with the tape of past results right beside the calculator and every calculator, the options, the in-app store and the About screen in reach without scrolling. The developer’s page shows both layouts on the Duo.
Evidence reviews
What we checked, when, and what the evidence establishes. Each record preserves the support label at that check.
· Simulator screenshots reviewed
Simulator verified · iphone-duo
Looked at the six iPhone Duo pictures on the developer's Calc Pro page, each 2853 × 2007 pixels, the size of the iPhone Duo simulator's open display. Each shows the app's own screens on a drawn Duo: open, a rail of calculators, the calculator and the tape (or a graph, worksheets, converters, statistics, currencies) side by side; and the closed phone with the list of calculators in a side bar.
Poses shown: Closed, Open. These are observations of the evidence, not a test of every interaction.
App version: Not recorded in this evidence. Environment: iPhone Duo simulator.
Still pictures with the developer's artwork around the phones, not a recording. The half-folded poses and Split View aren't shown. No build was tested.
View reviewed evidence ↗
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Is this your app?
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Sources: Calc Pro - The Best Calculator on the App Store (apps.apple.com) · Calc Pro on Panoramic Software's website, with iPhone Duo pictures (panoramicsoft.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
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
KeyboardKit
Kankoda Sweden AB
Keyboard settings that turn into a sidebar and a page when the Duo opens
Simulator verified: Daniel Saidi of Kankoda, in a KeyboardKit blog post with simulator screenshots, closed, half-folded and open (keyboardkit.com). The App Store seller is Kankoda Sweden AB (id 1568444977). The release notes for version 4.8.0 (released October 9, 2026): "This version adds a new split-screen design for the iPhone Duo and the iPad." On October 10, 2026, Daniel posted on X that all of Kankoda's apps are ready for the Duo's launch (@danielsaidi on X).
- Closed
- Book
- Open