Safari 26 makes websites on iPhone and iPad feel a lot more like native apps....

https://www.play-bookmarks.win/safari-26-on-iphone-and-ipad-lets-websites-act-more-like-real-apps-when-you

Safari 26 makes websites on iPhone and iPad feel a lot more like native apps. When you add a site to your Home Screen, it opens without the usual browser interface—no address bar or tabs—giving you a cleaner and more focused experience