Safari 26 on iPhone and iPad makes many websites feel just like apps by...

https://wiki-coast.win/index.php/Can_Safari_26_Web_Apps_Run_in_Full_Screen_Like_Native_Apps%3F

Safari 26 on iPhone and iPad makes many websites feel just like apps by improving Home Screen behavior. When you add a site to your Home Screen, it can now open with the new 'Open as Web App' option