It uses different structure, it does not create a separate app. You simply add the website and click on it, then the homepage will turn into a PWA version of that website.

Additionally, there should be a pop-up with all the added options, allowing you to change the website with just one click. It will also follow service-side rendering with edge locations, for consistent experience globally.

Moreover, it can also utilize your extension on both phones and PCs, and every web app will remain logged in.

This is something I am going to use for myself, and not just for Nostr.