Over 100,000 iPhone Duo Apps Now Live on the App Store

Apple says more than 100,000 iPhone Duo apps are now live on the App Store, a little over two weeks after the foldable went on sale in its first wave of markets.

The figure arrived in a statement from Susan Prescott, the company’s vice president of Worldwide Developer Relations. It came with a list of apps that have been rebuilt to use the inner display.

“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 said.

Apple also says developers who had already supported iOS 27 and resizable iPhone apps could use the larger inner display from day one. That shortened the work of getting an existing app onto the device.

The inner display is 50 percent larger than the one on the iPhone 18 Pro Max, and both screens share the same aspect ratio, so an app scales between them instead of restarting when the phone opens.

Desktop apps in a pocket

Microsoft Word and Outlook have rolled out a desktop-class experience, placing formatting tools beside a document and an inbox beside a full message. That is the sort of layout the fold was built to allow.

Zoom turns the inner display into a video conference room, keeping shared content and other participants on screen at the same time instead of forcing a choice between them.

Sports fans get live NBA and NHL games and highlights on the larger screen. Etsy and LTK Creator show more products per feed, while Goodnotes and Extra put the extra room to work.

Halide Mark III adapts to each pose, offering a clean viewfinder on the cover screen when the phone is closed and a waist-level viewfinder with one tap when it is half open.

How the iPhone Duo apps adapt

Apple says apps built with standard SwiftUI and UIKit components adapt on their own. Controls move to the side within easy reach, columns expand on the inner display, and buttons nudge away from the fold.

New arrangement and reserved region APIs let developers split content across the fold or run it edge to edge. A hinge API lets an app respond to the angle as the phone opens and closes.

iOS 27.2 adds Apple Pencil (USB-C) support, so users can draw in Procreate Pocket, take notes in Fineliner, TypeDraw and Apple Notes, and mark up documents in Preview on the device itself.

Workshops, collections and badges

More than 2,000 developers have attended over 50 in-person workshops in 19 cities, with additional sessions planned in London, Mexico City, Montreal, Paris and Toronto for teams still updating their apps.

The App Store now carries editorial collections for the device, and optimized apps are marked with a Made for iPhone Duo badge on their product pages, which makes the ready ones easier to find.

Developers also have direct access to Apple engineers and designers through online programming, technical guides and the Apple Developer Forums, a channel the company says is there for teams still working through layouts.

Netflix, YouTube, Instagram and WhatsApp were among the most popular apps optimized from launch day, and Apple expects that list to keep growing as more teams submit updated builds.

What it means in the Philippines

iPhone Duo is the first foldable iPhone, and we reported that local pre-orders opened on October 16 with prices starting at PhP159,990. That puts it well above every other iPhone in the lineup.

That price makes the app question more than academic. A buyer paying a premium for a larger canvas needs the software to justify it, and the 100,000 figure is Apple’s answer to that concern.

We have already rounded up some of the early iPhone Duo apps that make the fold worth opening, from layout experiments to apps that turn the hinge into part of the interface.

The company has not said how many of the App Store’s apps still lack an optimized build, so the 100,000 figure reads as a milestone rather than a finish line for the platform.

For now, the number gives iPhone Duo buyers a clearer picture of what the inner display can do. It also gives Apple a concrete answer to the criticism that foldables arrive with software that has not caught up.

More app updates are expected through the rest of the year, and Apple says the pace of submissions is still climbing, which is the detail that matters for anyone weighing the device at its local price.

Apple published the developer background and the workshop schedule on its newsroom, and the adaptation guidance is on Apple Developer.