There is huge bunch of websites mentioned here:

https://github.com/cheeaun/hackerweb/wiki/Hacker-News-apps

But, all of them (that I tried, anyway) are read-only. Meaning I can't comment or upvote. Of course, the default website (news.yc) allows login. But it isn't that great on mobile because it requires constant zooming and panning.

So, my question: any website that acts as a clone of HN and offers login functionality?

PS: I'm looking for web-app, meaning a website to use on my browser. I'm not asking for android/iphone apps.