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

https://post-wiki.win/index.php/Why_Do_Animated_Web_Games_Stutter_on_Some_Phones_but_Not_Others%3F

Safari 26 on iPhone and iPad makes many websites feel more like apps by improving how they work when added to the Home Screen. When you choose 'Open as Web App,' the site runs in a clean, app-like window without browser bars or tabs