Apple says over 100,000 apps are already built for iPhone Duo
Two weeks after launch, Apple says Duo-optimized apps top 100,000, with thousands more landing daily.
Apps · Macfolio · 7 November 2026
Two weeks after iPhone Duo launched, Apple says the App Store already carries well over 100,000 apps built for the foldable. In a statement quoted by MacRumors and MacStories, Susan Prescott, Apple's vice president of Worldwide Developer Relations, said thousands of optimized apps are added each day, and thousands of developers joined Duo workshops in 19 cities.
MacRumors confirmed the 100,000 figure tracks apps built with the iOS 27.1 SDK or later, which fill the Duo's inner and outer displays and place vertical controls in the status bar. Optimized titles show a Made for iPhone Duo badge on the device. Recent examples include Excel, Word, PowerPoint, OneNote, Zoom, Goodnotes, Halide Mark III, Netflix, and Fantastical.
What still looks unfinished
A 100,000 count is not the whole catalog. MacRumors lists many everyday apps that still are not Duo-optimized, including Apple's own Apple Store app, plus banking, travel, and delivery titles. Apps built with the iOS 27 SDK resize to fill most of the inner display but avoid the right-edge status bar. Apps built with the iOS 26 SDK or earlier still run centered with black side margins.
Apple's developer hub for Duo remains the practical path: rebuild with the current SDK, rely on standard SwiftUI and UIKit components, and use Duo layout APIs for poses and multi-column work. Workshops stay at developer.apple.com/iphone-duo.
What this does not mean
Crossing 100,000 does not mean every work app you depend on is ready. It also does not change hardware availability, repair pricing, or iOS 27.2 Pencil support. Treat the milestone as a progress report on software maturity, not a guarantee your personal app list is complete.
Our take: if you already own a Duo for work, audit the Made for iPhone Duo badge on apps you open every day, and file feedback for ones that still letterbox. If you are waiting to buy, the pace of updates is real, but critical holdouts remain.
Caveats: we did not count App Store listings ourselves. The 100,000 figure comes from Apple's statement as reported by multiple outlets. Apple has not posted a matching Newsroom release for this milestone.