Safari 26 on iPhone and iPad helps websites feel more like apps by improving...

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

Safari 26 on iPhone and iPad helps websites feel more like apps by improving how they work from the Home Screen. When you add a site to your Home Screen, it can now open as a standalone web app without browser bars or tabs getting in the way