How to create a responsive front-end for an iOS app?

Question

iOS

Let's say I'm making a simple calculator like this:

How can I make the buttons look the same on all devices? 5s 6s/+ 7s/+?
Is there some kind of layout that can make elements responsive,
or will it need to be calculated relative to the screen?

Answer 1

Enjoy.
https://developer.apple.com/library/content/docume...