Apple said on November 6 that more than 100,000 apps built for the iPhone Duo’s dual-screen layout are now live on the App Store, with thousands more being added daily. The milestone comes alongside a fresh batch of newly Duo-ready apps including Microsoft Word, Outlook and Zoom, TechCrunch reported.
What Apple said
Susan Prescott, Apple’s vice president of Worldwide Developer Relations, said the company is “excited to see the pace of updates continue to accelerate.” Apple’s announcement named more than a dozen apps newly updated for the Duo’s layout, including Microsoft Word, Outlook, Zoom, the NBA and NHL apps, Etsy, LTK, Goodnotes, Extra and Halide Mark III.
Netflix, YouTube, Instagram and WhatsApp were already optimized for the Duo before this announcement. Apple’s broader list of updated apps for iOS 27 spans streaming, news, productivity, travel, fitness and AI tools, including ChatGPT and Microsoft Copilot, giving buyers a wider spread of ready-to-use software across categories rather than updates concentrated in just one or two app types.
| Status | Example apps |
|---|---|
| Already optimized before Nov 6 | Netflix, YouTube, Instagram, WhatsApp |
| Newly optimized, announced Nov 6 | Microsoft Word, Outlook, Zoom, NBA, NHL, Etsy, LTK, Goodnotes, Extra, Halide Mark III |
| Not yet updated (reported black bar) | Spotify |
Why developer support for the Duo matters
An app that has not been updated for the Duo’s layout shows a black bar down the side of the screen, wasting usable space, and can bury features inside an overflow menu. That makes developer adoption central to whether the device’s dual-screen format feels finished to buyers rather than half-supported.
Apple has pushed developers toward that adoption directly. More than 2,000 developers attended over 50 in-person workshops across 19 cities, where Apple staff helped them add Duo support to their apps. The scale of that outreach, spread across nearly a city a workshop, points to how much weight Apple is putting on third-party software catching up to a hardware format most iPhone apps were not originally built for.
Not every update has fully rolled out yet. TechCrunch said its own review unit still showed a black bar in Spotify, and the App Store had not yet offered an updated version of that app at the time of its report, a reminder that Apple’s 100,000-app figure covers apps that have shipped updates, not every popular app on the platform.
The Duo’s supply constraints continue
The iPhone Duo starts at $1,999 for the 256GB model and sold out within hours of launch, with shipping times now pushed into next year. On its most recent earnings call, Apple said it is “hard to predict” when supply constraints on the device will ease.
That combination, strong early demand but limited supply, means the growing app library is reaching a device base that is still a fraction of what Apple could otherwise sell, at least for now. Buyers who do have a unit in hand are, for now, the main audience benefiting from the faster pace of Duo-ready updates Apple described.
Part of a broader iOS 27 app refresh
Apple’s November 6 list of updated apps was not limited to Duo support alone. The company grouped it with a wider set of iOS 27 app updates spanning streaming, news, productivity, travel, fitness and AI assistant apps such as ChatGPT and Microsoft Copilot, suggesting Apple is using this update cycle to push developers to modernize their apps for iOS 27 generally, not only for the Duo’s screen format.
Apple has not said what share of the newly listed apps were updated specifically for the Duo’s layout versus for iOS 27 changes more broadly.
Frequently asked questions
How many apps now support the iPhone Duo?
Apple says more than 100,000 apps are optimized for the Duo’s dual-screen layout, with thousands more being added daily, as of its November 6 announcement.
What happens if an app has not been updated for the Duo?
It displays with a black bar along the side of the screen, losing usable space, and can hide some features inside an overflow menu instead of the main interface.
Why is the iPhone Duo still hard to buy?
The device sold out within hours of its launch and Apple has said supply constraints are hard to predict, pushing shipping times for new orders into next year.
Which major apps were still missing Duo support as of November 6?
TechCrunch’s own review found Spotify still showing the black bar on its dual-screen layout, with no updated version yet available through the App Store at the time of its report.
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