Does Quantumult X work on iPhone Duo?
Yes. Cross Utility Ltd added iPhone Duo support in version 1.8.1 (7 October 2026): Optimized for iPhone Duo.
- On iPhone Duo
- Adapted
- Developer
- Cross Utility Ltd
- Category
- Utilities
- Current version
- 1.8.1 · 7 October 2026
- App Store rating
- 4.2 out of 5 (144 ratings)
- Last checked
How we know
Apple or the developer says the app is built for iPhone Duo's inner screen. See it on the App Store
History on iPhone Duo
- · Adapted (version 1.8.1)
Other Utilities apps on iPhone Duo
-
ThaIDdopa-bora · UtilitiesUpdated, unconfirmedUpdated 15 October 2026 -
Pipe SizerezyHVAC Co., Ltd. · UtilitiesUpdated, unconfirmedUpdated 25 October 2026 -
ShadowrocketShadow Launch Technology Limited · UtilitiesNot yetLast update 7 September 2026 -
DLT Smart QueueDepartment of Land Transport Thailand · UtilitiesNot yetLast update 20 December 2024 -
GoogleGoogle · UtilitiesUpdated, unconfirmedUpdated 26 October 2026 -
PEA Smart PlusProvincial Electricity Authority · UtilitiesUpdated, unconfirmedUpdated 21 October 2026 -
Phraseboard KeyboardDaniel Soffer · UtilitiesNot yetLast update 4 September 2021 -
Google ChromeGoogle · UtilitiesUpdated, unconfirmedUpdated 27 October 2026
All apps on iPhone Duo in Thailand →
Got an iPhone Duo? How does Quantumult X look on the inner screen?
No owner report yet for version 1.8.1.
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Good to know
Does Quantumult X work on iPhone Duo?
Yes. Cross Utility Ltd added iPhone Duo support in version 1.8.1 (7 October 2026): “Optimized for iPhone Duo.”
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.
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.