Safari 26 on iPhone and iPad brings websites closer to apps by improving the...

https://golf-wiki.win/index.php/Can_I_Use_the_Same_Web_App_on_iPhone,_iPad,_and_Mac_Without_Reinstalling%3F

Safari 26 on iPhone and iPad brings websites closer to apps by improving the Home Screen experience. When you add a site to your Home Screen, it now opens using the new 'Open as Web App' mode