Mixr was built and designed to solve a very real and important problem for Mixpanel users.
Mixpanel has a fantastic people analytics section of their product that lets you filter data based on certain criteria. You can then message these people by email, text message or send their data to a custom web-hook. What you can't do though is export that data to a CSV file.
Mixr does that for you
The application is only for Mixpanel users and specially People Analytics customers.