Is it Duo-ready?

Custom JS & CSS for Safari

Alfredo Grassau

View on App Store ↗Developer Tools

Does Custom JS & CSS for Safari work on iPhone Duo?

Probably. The release notes for Custom JS & CSS for Safari 1.0.8 (November 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 1.0.8

Mentions iPhone Duo: “Improved the user interface 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.

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How does Custom JS & CSS for Safari run on your Duo?

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Positions you tried

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

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Badge for developers

iPhone Duo status of Custom JS & CSS for Safari
Markdown
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Shows Custom JS & CSS for Safari's current status and updates by itself. Add it to your README, website or press kit.