Apple announced in November 2026 that more than 100,000 apps in the App Store have been optimized for the iPhone Duo, its foldable smartphone, just two weeks after the device went on sale.
Susan Prescott, Apple’s VP of Worldwide Developer Relations, said in a statement: “Today there are well over 100,000 apps built for iPhone Duo already live on the App Store, and thousands of optimized apps are being added to the store each day.” Prescott added that the pace of updates is continuing to accelerate as more developers optimize their apps for the device.
Despite the volume of available apps, optimization quality has not been uniform. At launch, users flagged issues with the Instagram app, noting it appeared messy on the Duo even though Apple had awarded it a “Made for iPhone Duo” label. Instagram chief Adam Mosseri acknowledged the challenges, describing the Duo as “a bit of a tricky form factor.”
The milestone suggests strong early developer adoption for Apple’s foldable, though the Instagram situation indicates that quantity of optimized apps does not always guarantee a polished user experience. With thousands of additional apps reportedly being added each day, how consistently developers are able to adapt their products to the foldable form factor may become an ongoing consideration for users evaluating the device.
Source: The Verge