Safari 26 brings a smoother, app-like experience to many websites on iPhone and...

https://deanssuperchat.capitaljays.com/posts/why-would-i-use-a-website-instead-of-installing-an-iphone-app

Safari 26 brings a smoother, app-like experience to many websites on iPhone and iPad. When you add a site to your Home Screen, it can now open without the usual Safari interface, thanks to the new 'Open as Web App' option