Look up WKWebviews
I posted a Xcode template a while back which probably needs updating. But there should be enough there to help. @Photics also had a plugin.
But the important thing is the WKWebview usage.
I akso posted a few example to show how to communicate between the native app and the hype project.
And also A coreDta example
Which I think was the latest thing I did. It will be using SwiftUI.
A lot depends on what you are trying to do. Just loading a webpage iand have that fully become the app with all interaction or mostly native app and some things done with Hype for animation, user interaction etc.
You can mix all of it.
This App Ourmusicradio uses a few Hype animation with interaction between the iOS native app and hype as well as loading webpages (Wordpress blog) and web embeds (chat box) All are integrated to be one App using wkwebviews and SwiftUI.