Safari 26 on iPhone and iPad helps many websites feel more like apps by...

https://www.bookmark-help.win/safari-26-lets-you-use-many-websites-like-apps-on-your-iphone-and-ipad-when

Safari 26 on iPhone and iPad helps many websites feel more like apps by improving the Home Screen experience. When you add a site to your Home Screen, you can choose 'Open as Web App' so it launches without the usual browser bars and menus