After we launched https://getmetasurvey.com/ few days ago, more than 100 users signed, and we completely don't know what is going on. What are they doing? Do they create surveys? Sent links to friends? Tried to answer by themself? We have only GA, and we can see some common info, but this is completely not enough. Serious product analytics systems aka Mixpanel or Amplitude (god bless them) - expensive, hard to understand, hard to implement.
So - i decided to create product analytics service for the rest of us - simple, cheap, easy to install - just to track user actions and see what are they doing on our (and your) MVPs, SaaS's, sites.