My Top 5 iPhone Duo Apps After One Week
After a week with the iPhone Duo: the best apps I have found that support it, four of my own, the big apps still missing support, and how the battery is holding up.
iPhone Duo
I have been building apps for the iPhone Duo since before it shipped. These entries collect what I measured, what Apple documents, how I adapted my own apps, and what living with the phone is like.
5 entries ~19 min of reading
Latest
Nov 7, 2026
2026 5 entries
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Beige Box: Tiny Retro Computers for iPhone Duo
Meet Beige Box, a coming-soon retro computer app for iPhone Duo, iPhone and iPad, with five original machines, web browsing, BASIC and games.
My First Few Days With the iPhone Duo
Coming from an iPhone 17 Pro Max: using the Duo mostly folded, great battery life, missing the camera zoom at soccer, and building apps with AI.
iPhone Duo Screen Sizes and Layout Notes for Developers
Display sizes in points, safe areas, size classes and fold behavior measured in Apple’s iPhone Duo simulator, plus Apple’s guidance on the fold region and hinge API.
How to Tell If an App Is Ready for the iPhone Duo
Which apps will actually use the iPhone Duo’s two displays? A simple look-at-the-screen test, what to check before you download, and what the three levels of support mean.