Is it Duo-ready?

Quantumult X

Cross Utility Ltd

View on App Store ↗Utilities

Does Quantumult X work on iPhone Duo?

Probably. The release notes for Quantumult X 1.8.1 (October 7, 2026) mention iPhone Duo. No owner has reported how it runs yet.

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By position

Outer screenNo data
Inner screenNo data
Half-folded (tabletop)No data
Keeps your place when foldingNo data

From recent reports. “Didn't try” answers aren't counted.

App Store updates

All apps
Version 1.8.1

Mentions iPhone Duo: “Optimized for iPhone Duo.”

Checked every few hours. Only builds made with the iOS 27.1 SDK, accepted since October 5, 2026, can use the whole inner display. Owner reports confirm whether an update did.

Report how it runs

How does Quantumult X run on your Duo?

Screenshots

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Positions you tried

Outer screen
Inner screen
Half-folded (tabletop)
Keeps your place when folding

Optional. It helps people who use the phone a certain way.

Details

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Badge for developers

iPhone Duo status of Quantumult X
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Shows Quantumult X's current status and updates by itself. Add it to your README, website or press kit.