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

https://www.jelly-bookmarks.win/safari-26-on-iphone-and-ipad-takes-websites-beyond-the-browser-by-letting-you

Safari 26 brings a smoother, app-like experience to many websites on iPhone and iPad. When you add a site to your Home Screen, it now behaves more like a standalone app without the usual browser interface