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

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

Safari 26 helps websites feel more like native apps on iPhone and iPad by improving how they work when added to your Home Screen. When you open a site with the new "Open as Web App" option, it runs without browser bars or tabs cluttering the screen