Lifestyle v3.10.30
Does Partiful work on iPhone Duo?
It works, but with black bars. Partiful hasn't been updated for iPhone Duo's inner display yet, so it runs in a phone-sized window.
At a glance
- Inner display (7.6″)
- Black bars
- Outer display (5.4″)
- Works normally
- Built with
- Not read yet
- We read each app's build SDK after it updates
- iPad version
- No
- Phone-only layout today
- Latest version
- v3.10.30
- Nov 3, 2026
- Duo in release notes
- Not yet
About Partiful
Partiful is made by Partiful and first came out on the App Store in August 2023. It's #65 on today's US App Store top charts. It has 283,228 ratings on the US App Store, averaging 5 stars. Version 3.10.30 came out on Nov 3, 2026 and needs iOS 16.4 or later. It's free to download. Among the 30 utilities & lifestyle apps we track on the US App Store, 9 already fill the inner display, 3 are partly adapted and 18 still show black bars. By number of ratings, Partiful is #19 of them.
From its App Store listing:
The easiest way to plan and discover social events. Create free event invite pages, send text updates, sell tickets, and find the best events near you. ACTUALLY FUN EVENT PAGES - Create pages for any event — birthdays, pregames, dinners, game nights, watch parties, group trips, bachelor/bachelorettes, weddings, and more - Make it aesthetic with page themes, effects, and event posters—or upload you…
On the inner display
Apps built with older SDKs are placed in a phone-sized safe area on a black background. Everything works; you just don't get the bigger screen.
In Split View
iPhone Duo is the first iPhone that can show two apps side by side, and every app takes part — including Partiful. Open it on the inner display, then add a second app next to it. You can save the pair and come back to it later.
Duo-specific features
None confirmed yet. Duo-specific features include side toolbars, layouts that react to the fold, and content on the outer display while the app is open inside.
Evidence & history
App build,
Version 3.10.23 is built with the iOS 26.5 SDK
Apple runs apps built with the iOS 26 SDK or earlier in a phone-sized window on the inner display.
- : Not confirmed yet → Black bars — built with the iOS 26.5 SDK
Latest release notes
Version 3.10.30 · Nov 3, 2026
Fixed bugs and made improvements to the stability of the app.
Questions
Does Partiful work on iPhone Duo?
It works, but with black bars. Partiful hasn't been updated for iPhone Duo's inner display yet, so it runs in a phone-sized window.
Does Partiful work on the outer display?
Yes. iPhone Duo's 5.4-inch outer display behaves like a regular iPhone screen, so every iPhone app works there as usual.
Can I use Partiful in Split View on iPhone Duo?
Yes. On iPhone Duo every app can be placed side by side with another app on the inner display — developers don't need to opt in. How comfortable it feels at half width depends on the app's layout.
Why does Partiful have black bars on iPhone Duo?
Apps built with the iOS 26 SDK or earlier run in a phone-sized window on the inner display, and iOS 27 builds can still leave some space empty. The bars disappear once the developer rebuilds the app with the iOS 27.1 SDK — you only need to update the app.
When will Partiful fill iPhone Duo's inner display?
When its developer releases an update built with the iOS 27.1 SDK or later. We read the SDK of every new version of Partiful within about a day of its release and update this page.
What can I do about the black bars until then?
Use Partiful on the outer display, where it works like on any iPhone, or put it in Split View next to another app on the inner display so less of the screen goes unused.