Safari 26 brings a smoother app-like feel to many websites on iPhone and iPad....

https://wiki-dale.win/index.php/Do_Web_Apps_Reduce_Update_Headaches_Compared_to_Native_Apps%3F

Safari 26 brings a smoother app-like feel to many websites on iPhone and iPad. When you add a site to your Home Screen, it can open without browser bars or clutter, just like a regular app