Safari 26 on iPhone and iPad brings websites closer to the feel of real apps....

https://bravo-wiki.win/index.php/Safari_26_Web_App_vs_Regular_Bookmark:_What_Is_the_Difference%3F

Safari 26 on iPhone and iPad brings websites closer to the feel of real apps. When you add a site to your Home Screen, it launches without the usual browser bars, giving you more screen space and a cleaner look