Two weeks after the iPhone Duo went on sale, Apple says the App Store has crossed 100,000 apps optimized for its first foldable. The company framed the milestone as evidence of rapid developer adoption, with AppleInsider reporting that thousands of newly adapted apps are being added daily and that Apple Music was ready for the Duo's twin screens at launch.

There's an asterisk worth noting. MacRumors confirmed that Apple's figure counts apps built with the iOS 27.1 SDK or later — a technical bar for compatibility rather than a guarantee that each app was deliberately redesigned for the dual-screen layout. MacRumors also flagged that some notable apps are still missing from the optimized list.

Even with that caveat, the trajectory matters. Foldables live or die on software support, and a six-figure optimized library a fortnight in is a different story from the slow app ramps that dogged early Android foldables. Apple called the developer response "wonderful" to see — the open question is how quickly the remaining holdouts, including some big names, fill in the gaps.