Friday, September 11, 2026

Developing for iPhone Duo

Craig Hockenberry:

It looks like Xcode 27.1 is needed to test the iPhone Duo resizability - and that hasn’t been uploaded yet.

Jordan Morgan:

Cupertino and Friends™️ dropped six new videos over developing, designing, and crafting great apps for the nascent device:

  1. Design for iPhone Duo
  2. Prepare your app for iPhone Duo
  3. Raise the bar with iPhone Duo
  4. Strike a pose with adaptive layouts on iPhone Duo
  5. Leverage multiple displays and scenes on iPhone Duo
  6. Build a great camera experience for iPhone Duo

Nathan Manceaux-Panot:

In the Duo dev video, they describe how text buttons can’t be moved to the new vertical sidebar, as opposed to icon buttons.

I wonder if that’s one of the reasons Liquid Glass pushed hard for icon buttons, even though these are harder to understand; they make the vertical layout possible at all.

Nico Reese:

Totally confusing to me how the toolbar is ordered completely different between both modes here.

Dennis Oberhoff:

I think the problem with the iPhone Duo for developers is mostly that it does not create any new opportunities in the form of a new market or a new audience.

Previously:

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Apple likes to claim that developers are freeloaders who need to pay 30% for access to their valuable APIs. Is Apple going to pay developers to support all of the new APIs for a great iPhone Duo experience, given that for most developers it's just a bunch of work that won't benefit the developer in terms of increased sales, but greatly benefits Apple?

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