There are of course other benefits to rolling your own analytics:
1. you can build the analyzers how you want, to relate different disparate events to each other and get a report of that easier than you can with a 3rd part solution (if the 3rd party solution can even do what you want)
2. You can do real time querying of the data relating to what the user is interacting with at the moment.
downsides, stuff like gender/age analysis will be outside of your grasp - at least at the beginning.
1. you can build the analyzers how you want, to relate different disparate events to each other and get a report of that easier than you can with a 3rd part solution (if the 3rd party solution can even do what you want)
2. You can do real time querying of the data relating to what the user is interacting with at the moment.
downsides, stuff like gender/age analysis will be outside of your grasp - at least at the beginning.