Figma can create smooth corners with its corner smoothing control. If you need a shape that follows a specific mathematical superellipse exponent, import a generated squircle SVG. Neither method should be presented as Apple's official production icon mask.
Set the shape, download the SVG, and drag it into Figma — or copy the markup and paste it on the canvas.
Select a rectangle, set a corner radius, then open the corner smoothing control and raise it toward iOS (60%). Figma documents 60% as its iOS-style smoothing preset. It is tied to a corner radius rather than a chosen superellipse exponent, so it will not always match a specific n value. See Figma's corner smoothing guide.
The SVG preserves the selected mathematical outline at any size, which is useful when design and web code need the same explicitly chosen shape.
Figma has corner smoothing. To use a specific superellipse exponent consistently across design and code, import a generated SVG.
Figma's documented iOS-style preset is 60%. A generated n ≈ 5 SVG is another approximation, not an official Apple mask.
Place the squircle shape above the image, select both, and choose "Use as mask".