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

https://direct-wiki.win/index.php/How_Do_Web_Apps_Handle_Authentication_and_Accounts_Without_a_Native_App%3F

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 and use the new "Open as Web App" option, the site launches without the usual browser bars and menus