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

https://wiki-square.win/index.php/What_Should_a_Developer_Still_Add_on_Top_of_Safari_26_for_a_Better_Web_App

Safari 26 makes using websites on iPhone and iPad feel more like using apps. When you add a site to your Home Screen, it now launches without the usual browser bars cluttering the view