Ask HN: analytics for web api?

Is there anything like Google Analytics for analyzing web api traffic? Preferably self hosted so the data will stay on my server.

I launched an iphone app that generates a lot of web api requests. I spent half a day rigging up a simple jqplot system for displaying simple stats, but now I want to do geo-ip and displaying which country/state is using my app.

So instead of reinventing the wheel, is there already an web app that can do the analysis for me, and I just need to feed it the data in the proper format?