Safari 26 brings websites closer to app-like experiences on iPhone and iPad....

https://tiny-wiki.win/index.php/Safari_26_Web_App_vs_Regular_Bookmark:_What_Is_the_Difference%3F

Safari 26 brings websites closer to app-like experiences on iPhone and iPad. When you add a site to your Home Screen, it feels more like a native app without browser bars getting in the way