It is possible to use custom fonts and for them to still work great with Dynamic Type. You need to define the default size and use UIFontMetrics to get the scaled font for each one of the styles you'd like to use.
https://developer.apple.com/documentation/uikit/uifontmetrics/scaledfont(for:)
You may also find interesting...
Dynamic Type is a feature that lets a user change the font size (smaller or larger) of the whole system or a particular app. To support it, choose a preferred font based on one of the 11 supported text styles: Large title, heading, body...
If you want to keep yourself up to date with what’s going on, or what has been published lately, on how to develop more accessible mobile apps, make sure you subscribe to Accessible Mobile Apps Weekly by @RobinKanatzar from @accessible_apps.
@BeMyEyes, founded by @hjwiberg, enables people who are blind and low vision to identify objects by pairing them with volunteers from around the world using their camera. Winner of an Apple Design Award 2021 for Social Impact.
