How many apps are actually built for iPhone Duo — and why is Google Docs still not one of them?

Apple says more than 100,000 apps built for iPhone Duo are now live on the App Store, about two weeks after the foldable went on sale on October 23. That count means apps built with the iOS 27.1 SDK or later that use the full inner display — and big names like Google Docs, Sheets, Slides, Microsoft Teams, DoorDash and Venmo were still not among them as of November 6 checks.

You unfold your new Duo to finish a document, and the app you need most is still sitting in a little centered box with black space around it.Short answer: Apple says more than 100,000 apps built for iPhone Duo are now live on the App Store, about two weeks after the foldable went on sale on October 23. That count means apps built with the iOS 27.1 SDK or later that use the full inner display. Big names like Microsoft Word, Outlook and Zoom are in — but Google Docs, Sheets and Slides, Microsoft Teams, DoorDash and Venmo were still not optimized as of November 6 checks.Why it matters: Apple sorts Duo apps into three groups: older-SDK apps sit centered with empty space, iOS 27 SDK apps fill most of the screen, and iOS 27.1-or-later apps are the truly optimized ones with toolbars and tab bars placed for the fold.

That is why two apps can look completely different on the same phone, and why a headline number does not guarantee your one key app is ready.Check your own must-have apps, step by step:1. Before you rely on Duo for work, open each must-have app unfolded and check whether it fills the screen or sits boxed in the center.2. Update everything in the App Store — several apps, including Zoom, added Duo support in a quiet update noted simply as ‘iPhone Duo support.’3.

Look for the ‘Made for iPhone Duo’ badge on an app’s App Store listing before you buy or subscribe.4. For a not-yet-optimized work app such as Google Docs, use its web version in Safari as a stopgap and keep the boxed app for quick reads.5. Recheck your missing apps weekly — the optimized list is growing fast in the first weeks.Pro tip: Do not assume a famous app is optimized just because its maker shipped a sister app — Microsoft shipped Word and Excel but not Teams, and Google shipped Chat and Translate but not Docs.Ad’s take: A hundred thousand apps in two weeks is a strong start for a brand-new shape of phone.

But a foldable earns its keep on the three or four apps you live in — check yours first, then enjoy it.