Safari 26 turns many websites into app-like experiences on your iPhone and...

https://www.start-bookmarks.win/safari-26-makes-websites-feel-more-like-real-apps-on-your-iphone-and-ipad-when

Safari 26 turns many websites into app-like experiences on your iPhone and iPad. When you add a site to your Home Screen, it behaves more like a standalone app with minimal browser elements