iPhone Duo Apps Pass 100,000, but Venmo and DoorDash Still Lag

If you bought an iPhone Duo in its first two weeks, the apps you open most may already stretch across both screens. Apple now says there are iPhone Duo apps numbering "well over 100,000" on the App Store, according to a statement from Susan Prescott, its vice president of Worldwide Developer Relations, reported by MacRumors on November 6. The catch is that plenty of everyday names, from Venmo to DoorDash to Google Docs, are not on that list yet.

Here is who that affects, what an optimized app actually changes, and what to do in the meantime.

What Apple counts as an iPhone Duo app

Apple's figure is not a count of every app that opens on the foldable. Per MacRumors, it covers apps built with the iOS 27.1 SDK or later that fill the full width of both displays when the phone is open and place their controls in the status bar. Apps built on older tools still run, but they do not get that layout.

Apple has been pushing developers toward this for months. Its Get Ready for iPhone Duo developer page gathers preparation resources and Group Lab videos, and MacRumors reports Apple ran more than 50 in person workshops across 19 cities ahead of the October 23 launch.

So the 100,000 number is a measure of how many developers rebuilt for the new screen in a short window. It does not mean the apps you rely on are among them.

Big names that already fill both screens

The list of optimized apps MacRumors cites leans toward work, video and social:

• Microsoft Word, Excel, PowerPoint and OneNote
• Zoom
• Netflix and Amazon Prime Video
• Instagram and WhatsApp
• Goodnotes and Etsy
• The NBA and NHL apps

That mix makes sense. Documents, video and note taking gain the most from a wider canvas, and those developers had a clear reason to move first.

Everyday apps still waiting for an update

The gaps are where many owners will feel it. MacRumors lists dozens of popular apps that had not been optimized as of November 6, including:

• Money: Venmo, PayPal, Wells Fargo
• Food and shopping: DoorDash, Uber Eats, GrubHub, Starbucks, Whole Foods, Best Buy, Nike
• Travel: Delta, JetBlue, Southwest, MTA
• Work tools: Google Docs, Sheets and Slides, Microsoft Teams, Microsoft Authenticator
• Home and shipping: Ring, Google Home, FedEx, UPS, USPS
• Entertainment: Steam, Spectrum TV, Fandango, AMC Theaters, Libby, Goodreads, Duolingo

Apple's own Apple Store app is on that list too, which says something about how fast the rollout has moved.

What to do if your favorite app looks cramped

None of the apps above are broken. They simply do not use the full open display yet. A few practical steps help while you wait:

1. Turn on automatic updates. Go to Settings, then App Store, and switch on App Updates. Optimized versions will arrive without you checking each one.
2. Read the "What's New" notes. When a developer adds iPhone Duo support, it usually says so in the release notes on the app's App Store page.
3. Try the web version for work. Google Docs, Sheets and Slides also run in a browser, which can be a useful stand in on the big inner screen until the apps catch up.
4. Ask the developer. Most App Store pages link to a support site. Requests from paying customers are one of the clearest signals a team gets about priorities.
5. Watch your storage. Updates pile up fast on a new phone. If space is tight, our guide on clearing a full iPhone covers what to remove first, and Apple's on device features already take a big share, as we reported in Apple Intelligence storage after iOS 27.

Who should care most right now

If you mainly use your phone for video, messaging and Microsoft Office, the iPhone Duo is in good shape today. If your day runs through banking, delivery, airline and Google Workspace apps, expect to see more unoptimized layouts for a while.

Anyone still deciding whether a foldable is worth it should weigh that app picture alongside price and battery life. Our smartphone buying guide walks through those tradeoffs, and Apple's other big screen bet this season, the touchscreen Mac, has its own early quirks, covered in our MacBook Pro comparison.

The pace so far suggests the gap will shrink. Apple passed six figures about two weeks after launch, and holiday shoppers unwrapping new foldables will add pressure on the holdouts. For more phone and hardware news, browse the gadgets section.