Safari 26 turns many websites into app-like experiences on your iPhone and...

https://lanescooljournal.inkharbory.com/posts/why-apple-letting-any-site-open-as-a-web-app-matters-for-developers

Safari 26 turns many websites into app-like experiences on your iPhone and iPad. When you add a site to your Home Screen, it behaves more like a standalone app with minimal browser elements