I used your app in the past. I love the design; my only gripe (and what ultimately caused me to uninstall) was being unable to sign into my HN account. Other than that, great job with it.
FWIW I think Boreal is the greatest ios app for HN. It has great features like filters and comment collapsing. Also allows commenting, voting and publishing.
http://getboreal.com/?ckattempt=1