I think that's pretty vague.

I took a look at your sample report (http://usermetrix.com/projects/2) and your home page, and it looks like you have a combination of Java AOP logging and exception logging to a database, and then you make a report based on that? Is there anything "actionable" in the report?

So the people buying this service will be Java end-user app developers and their managers, no one else will really need it?

How about: "UserMetrix lets Java and Android developers measure feature adoption and exception message trends across applications to pinpoint usability and functional problems before your users notice"