How to reduce and increase the font size based on screen size in iOS

Question

I want to reduce and increase the font size of the text in a UILabel based on the screen size. I'm trying to build for iPhone 5s to iPad Pro screen size (if thats possible). The labels are in a vertical stack view

Answer 1

You can easily do that by changing the Autoshrink property of the label from its default value of Fixed Font Size to Minimum Font Scale.

Here I have attached an image to do that:

Answer 2

To achieve this:

1. click on the label and go to the attributes pane
2. change the "lines" to 0
3. In autoshrink click on minimum font size and set it to about half the size of your main font or a much smaller font