Does CASE No work on iPhone Duo?

Probably, but it's not confirmed. CASE No was updated on 27 October 2026 (version 1.3.1), after Apple's iPhone Duo tools came out, but Emre Arslan 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
Emre Arslan
Category
Games
Current version
1.3.1 · 27 October 2026
Popularity
#16 in the top charts in Türkiye
App Store rating
4.5 out of 5 (25 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

Other Games apps on iPhone Duo

All apps on iPhone Duo in Türkiye →

Got an iPhone Duo? How does CASE No look on the inner screen?

No owner report yet for version 1.3.1.

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 CASE No work on iPhone Duo?

Probably, but it's not confirmed. CASE No was updated on 27 October 2026 (version 1.3.1), after Apple's iPhone Duo tools came out, but Emre Arslan 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 CASE No be adapted to iPhone Duo?

Only Emre Arslan knows. We check CASE No 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.