We haven't got one! Hubski doesn't have an API, but I did cobble together very simple one for a couple of specific user requests. I'd be willing to make it easier on someone working on one. I have no mobile app experience, personally.
Would you be interested in collaborating on a Hubski mobile app? I've got no experience working with Android, but I've done a bit of iOS freelance work. Let me know if you've already started work on something, and if not hopefully we can work something out. You can PM me if you want my email or anything. Cheers!
Very cool gimi, I look forward to checking out what you come up with. Half decent is better than what we have now, right? Good luck and have fun making it.
I have some very basic android programming experience, and am more than willing to throw my lot in. I have to say, though, the site itself on my nexus 7 is perfectly usable.
I'll start specing out an API and see how it goes. Edit: I was looking at Reddit's API and that seems like a pretty good goal for a robust API.