Mine's definitely a labor of love - I use it daily, and hardly ever use the browser version unless I want to comment on something. I'm working on adding commenting/submitting/voting at the moment, and should have that done shortly. Personally, I think it's the most beautiful HN reader on the App Store, but I may be biased. It's free too.
https://itunes.apple.com/us/app/news-yc/id592893508?mt=8
EDIT: All of the production code is available on Github as well.
https://github.com/bennyguitar/News-YC---iPhone