On my desktop, it is just a website? Maybe you're accessing from a mobile device, where most people prefer to consume software as apps, and they are making that the default?
Yes, I’m on a phone. I don’t see a way to use it in-browser. I don’t install apps unless absolutely necessary (no need for the a app to have more permissions than it needs to function)
I don’t see why this has to be an app. I’ll have to wait until I get in front of a laptop to try it in-browser (if I remember).