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

https://wiki-byte.win/index.php/How_Do_I_Cite_WebKit_When_Explaining_Safari_26_Web_App_Changes%3F

Safari 26 makes websites on your iPhone and iPad feel more like native apps. When you add a site to your Home Screen, it now launches in a clean window without browser bars, just like a regular app