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

https://wiki-club.win/index.php/Does_a_Web_App_Get_Deep_iOS_Integration_Like_Share_Sheet_and_Widgets%3F

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