Tom Schimansky

Thanks for the information, I didn't know about this PSD import option in Affinity, which is not turned on by default. So then of course you can also use the Apple PSD template, although the version I posted at the beginning is not wrong. It's only rasterized to 1024x1024 pixels, but for an icon that should be enough in most cases...

Thats not correct, you can't rebuild the shape with a rectangle and rounded corners, because as I wrote in the file, it is not a rectangle with rounded corners, but a shape called a squircle, which looks more round. Also the shadow in your example is not the official "Apple shadow" from the Apple Photoshop template anymore. Here is an article about the shape: https://hackernoon.com/apples-icons-have-that-shape-for-a-very-good-reason-720d4e7c8a14

I created a simple Icon-Template for MacOS 11 BigSur in Affinity Designer. It is based on the official Photoshop template provided by Apple with the correct shadow and mask: https://developer.apple.com/design/resources/#macos-apps Sadly the template from Apple is rasterized so I made it with highest resolution available, which is 1024x1024. Download MacOS 11 Icon Template: MacOS 11 BigSur Icon Template.afdesign