What is the difference between a RoundedRectangle and a Capsule Shape in SwiftUI ?

A Capsule shape has a semi circle at the horizontal end, where a RoundedRectangle has corners rounded off depending on the radius of corner and which corners.

You can make a Capsule shape with RoundedRectangle by making the corner radius half the height of the frame!

I understand that, but to get a capsule one need only modify a rectangle, so what was the point ?

The point is that you do not need to know the height of the frame for it to have semi circle edges

Did this to show that

struct ContentView: View {
    let texts = [" World!", "Goodbye"]
    @State private var count = 0
    @State private var text = "Hello"
    var body: some View {
        VStack {
            Text(text)
                .frame(width: 170)
                .background(.purple)
                .clipShape(.capsule)

            Text(text)
                .frame(width: 170)
                .background(.cyan)
                .clipShape(.rect(cornerRadius: 40))

            Button("Tap Me") {
                if count < texts.count {
                    text += texts[count]
                    count += 1
                }
            }
            .buttonStyle(.borderedProminent)

        }
        .font(.largeTitle)
        .foregroundColor(.white)
        .padding()
    }
}

when you tap the button you will see that the first one has round corner the same however the second one has vertical straight edges.

You can also make a Circle with a Rectangle

RoundedRectangle(cornerRadius: 25.0)
    .fill(.blue)
    .frame(width: 50, height: 50)

That's a pretty weak excuse on Apple's behalf.

Why didn't Apple do what Pixelmator did and allow for shapes to be created based on a number of points e.g. three for a triangle and five for a pentagon etc..

Anyway, thanks for the demo !