Safari 26 lets websites feel more like native apps on your iPhone and iPad....

https://www.charliebookmarks.win/safari-26-on-iphone-and-ipad-makes-many-websites-act-more-like-real-apps-when

Safari 26 lets websites feel more like native apps on your iPhone and iPad. When you add a site to your Home Screen, it opens without browser bars or tabs, giving you a cleaner, full-screen view