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

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

Safari 26 makes websites feel more like native apps on your iPhone and iPad. When you add a site to your Home Screen, it now behaves like a standalone app without the browser’s address bar or tabs