Safari 26 on iPhone and iPad brings websites closer to app-like experiences....

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

Safari 26 on iPhone and iPad brings websites closer to app-like experiences. When you add a site to your Home Screen, it opens without the usual browser interface—no address bar or tabs