Does Whatnot work on iPhone Duo?
Probably, but it's not confirmed. Whatnot was updated on 26 October 2026 (version 26.44.0), after Apple's iPhone Duo tools came out, but Whatnot Inc. doesn't mention iPhone Duo. Apps built with Apple's standard components fill the inner screen on their own once rebuilt.
- On iPhone Duo
- Updated, unconfirmed
- Developer
- Whatnot Inc.
- Category
- Shopping
- Current version
- 26.44.0 · 26 October 2026
- App Store rating
- 4.7 out of 5 (1,073,810 ratings)
- Last checked
How we know
Updated since Apple's iPhone Duo tools came out (5 October 2026), but the developer doesn't mention the Duo. Apps built with Apple's standard components fill the inner screen on their own. See it on the App Store
History on iPhone Duo
- · Updated, unconfirmed (version 26.44.0)
Other Shopping apps on iPhone Duo
-
ShopShopify Inc. · ShoppingAdaptedApple's list, 22 October 2026 -
DOSENBACHDeichmann SE · ShoppingAdaptedRelease notes, version 5.2.1 -
ManorManor · ShoppingUpdated, unconfirmedUpdated 14 October 2026 -
GalaxusDigitec Galaxus AG · ShoppingAdaptedRelease notes, version 26.10.0 -
TemuTemu · ShoppingUpdated, unconfirmedUpdated 27 October 2026 -
MigrosMigros · ShoppingUpdated, unconfirmedUpdated 27 October 2026 -
markoMarko App · ShoppingNot yetLast update 1 October 2026 -
Lidl PlusLidl Digital International GmbH & Co. KG · ShoppingUpdated, unconfirmedUpdated 27 October 2026
All apps on iPhone Duo in Switzerland →
Got an iPhone Duo? How does Whatnot look on the inner screen?
No owner report yet for version 26.44.0.
Still looking for the iPhone Duo itself? Restocks sell out within minutes: get an alert the moment one lands near you.
Good to know
Does Whatnot work on iPhone Duo?
Probably, but it's not confirmed. Whatnot was updated on 26 October 2026 (version 26.44.0), after Apple's iPhone Duo tools came out, but Whatnot Inc. doesn't mention iPhone Duo. Apps built with Apple's standard components fill the inner screen on their own once rebuilt.
Why do some apps have black bars on iPhone Duo?
Because they were built before Apple's iPhone Duo tools. On the inner screen, an app built for an older iOS opens in an iPhone-size window on a black background; one built for iOS 27.0 uses more of it but leaves some space blank; only apps built with the iOS 27.1 SDK, which developers have had since 5 October 2026, use the whole display.
When will Whatnot be adapted to iPhone Duo?
Only Whatnot Inc. knows. We check Whatnot on the App Store again within about 1 h: this page changes as soon as a new version says it supports iPhone Duo.
Do apps that aren't adapted still work on iPhone Duo?
Yes. Every iPhone app runs on iPhone Duo: one that isn't adapted just doesn't fill the inner screen until its developer updates it.
How we measure
Sources: Apple's list of apps adapted to iPhone Duo (22 October 2026) and each app's App Store record (version, release date, release notes, description). Apple doesn't say which tools an app was built with, so an app stays “Updated, unconfirmed” until its developer says more.