I like this new client! Good work. It's refreshing to see an HN client with a 2014 era UI. I also love that it's Open Source.

Couple of items of feedback for you.

#1 Please make the top off-white colour bar go away; it's jarring on an otherwise all-white background. The most tasteful looking iOS 7 / 8 era apps I enjoy are the ones that make the iOS info bar blend with the rest of the screen real estate.

#2 Once inside an article, the black back circle isn't very pretty, or easy to hit. This needs some work since it just looks a little overlaid and unpleasant. I don't have any meaningful suggestions, but I'd suggest this needs some rethinking.

All in all, I love it! Thank you.