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

https://highstylife.com/how-do-i-add-a-website-to-my-ipad-home-screen-and-make-it-feel-like-an-app/

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