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

https://wiki-cable.win/index.php/How_to_Keep_Controls_Reachable_on_a_Compact_iPhone_Screen

Safari 26 on iPhone and iPad makes websites feel more like apps by improving how they behave when saved to the Home Screen. When you add a site, it can open in its own window without the usual browser bars, giving you a cleaner, app-like experience