When iOS3 was a thing, there was exactly one screen size to support at one resolution, and when you went to the home screen the app closed so you could count on

When iOS3 was a thing, there was exactly one screen size to support at one resolution, and when you went to the home screen the app closed so you could count on a predictable state every time the app opened. We used to measure design elements in number of pixels back then. It was a much simpler time.