Piwik is pretty great, nice for being free. You can definitely install that and write up a script to attach to their api, it's pretty easy to use. Please pleas

Piwik is pretty great, nice for being free. You can definitely install that and write up a script to attach to their api, it's pretty easy to use. Please please please host your analytics on a completely different server though. Analytics is a heavy duty operation, and should be no where near your app code. Don't write it yourself, piwik has done all of the heavy lifting for you, don't reinvent the wheel at this stage.