Safari 26 brings a smoother app-like experience to many websites on your iPhone...

https://holdenssplendiddigests.zenbloomer.com/posts/can-i-use-the-same-web-app-on-iphone-ipad-and-mac-without-reinstalling

Safari 26 brings a smoother app-like experience to many websites on your iPhone and iPad. When you save a site to your Home Screen, it opens cleanly without the usual browser bars getting in the way