Also, I couldn't tell from the screenshots if the app allowed users to view comments on a submission. As we all know, the discussions can be as good as, if not better, than the articles.

Indeed. I'd buy this instantly if it provided an iPhone-friendly interface for reading the discussion, but I can't tell from the screenshots. Also, if there is a story view --- reasonably sized up-down voting arrows alone would make it worth paying for.

It doesn't even seem to have a way to log in, getting to comments is awkward, and threads are flattened to an iPhone list.