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

https://dibz.me/blog/what-is-the-difference-between-a-pwa-and-just-a-site-added-to-home-screen-1273

Safari 26 brings a smoother, more app-like feel to websites on iPhone and iPad. When you add a site to your Home Screen, it now launches more like a native app without the usual browser bars cluttering the screen