Thanks for the mention @rilwis and @leland.
@shilpa Freemius Insights is the way to go. It will help you to see your effective growth, track uninstall reasons, site URLs, and even the emails of the site owners that opt-in to usage-tracking. Here's the type of data that you can get:
In fact, Freemius is the only solution in the market that does analytics and usage-tracking for WordPress themes and plugins. Feel free to ping me if you have any questions - always happy to help.