Safari 26 on iPhone and iPad makes many websites feel more like native apps....

https://www.hotel-bookmarkings.win/with-safari-26-on-iphone-and-ipad-many-websites-now-feel-much-more-like-apps

Safari 26 on iPhone and iPad makes many websites feel more like native apps. When you add a site to your Home Screen, it now opens in a focused, app-like view without the usual browser bars