title: How to analyse device and os distribution based on total revenue in firebase analytics?
body: <p>Our iOS app has paid users, both who purchased on the app store directly or purchased an 
  In-App-Purchase. The app is launched in multiple countries.</p>
  
  <p>I am trying to analyse the app using firebase analytics. I want to know if I can analyse our 
  users based on total revenue. To elaborate, I want to get breakdown of user device models,
  OS version etc based on revenue in a common currency.
  For example, if my total revenue is 10$(this includes purchases from multiple countries) and users who are
  using iphone 7 paid 7$ in total and iphone 6 users paid 3$ in total I want the breakdown to
  be 7:3(iphone 7 vs iphone 6).</p>
  
  <p>Is there anyway to do this in firebase?</p>
  
  <p>PS: If I have to just get the breakdown of number of paid users I can just create a custom
  user property "paidUser" which will store a boolean value and then use it as filter.</p>