Safari 26 brings a big improvement to how websites work on iPhone and iPad by...

https://andressuniquechat.cloudhinter.com/posts/when-did-safari-start-supporting-web-application-manifests

Safari 26 brings a big improvement to how websites work on iPhone and iPad by letting you open them right from the Home Screen like real apps. When you add a site to your Home Screen, Safari now gives you the option to “Open as Web App