I spent some time this weekend converting some of the basic examples of Framer to native Swift.
It's surprisingly quite easy thanks to the great foresight by Koen and Jorn to base Framer's view model on a similar concept to what iOS has. That is to say a lot of the layout concepts are extremely similar.
If you've been thinking about jumping into some native iOS code, using the great knowledge learnt, Framer is fantastic starting point.
Feel free to bug me if you have any questions.