I've been thinking about that as well. We'll see if it's the case.
Think the app could be really nice though and save me some time when I feed my HN addiction. I always find myself opening 5-7 tabs each time I go into HN. Then I have to navigate between them, close the ones I haven't read and such. Can become tedious.
With this app, I'll also have a constant overview of how much of the frontpage I haven't read :-).
I just think it a tad redundant since browsers/website are pretty much native...