I am really confused as to why Apple is using the following values. It seems their point values are doubled. Surely you would not want to specify 22 as the smallest size of font in your app.
"Text should never be smaller than 22 points, even when the user chooses the extra-small text size. For comparison, the body style uses a font size of 34 points at the large size, which is the default text-size setting."
Don't they mean to say 11 points and 17 points?