It's something I use every day and I hope other people find it useful. Enjoy!
- Let me see my comment history & other people's replies.
- Get a new color scheme for the story list. It's very hard to read, maybe that's just my colorblindness. The colors don't go together well. They're too dark for my tastes. Use an app such as Instapaper or news:yc for examples of good color flow.
- List the number of comments for each story.
- Option for bigger text -- at least in the main story list view.
- Adjust the username/logout thingy in the upper right corner to something more elegant. How it currently works is wonky and reminds me of the worst examples of Android UX.
- Most importantly, charge for your app. 99 cents or 1.99 or whatever. You should gain from your work, however small. I'll be your first customer.
And I too would buy your app if you started selling it.
I wanted to ask, though, did you know that "upvote" and "save a story for later" means same thing on HN? What was the reason for adding "star" button in your app? Couldn't you use this instead http://news.ycombinator.com/saved?id=marketer and have just the "upvote" button?
Reddit has a very nice API, one of the killer features is that if you take any reddit page and add ".json" to the address it'll spit out pure json at you.
For example: http://www.reddit.com/r/all becomes: http://www.reddit.com/r/all.json