Safari 26 on iPhone and iPad makes many websites feel just like apps by...

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 makes many websites feel just like apps by improving Home Screen behavior. When you add a site to your Home Screen, it can now open with the new 'Open as Web App' option