Review on AppCensus by Wayne Girard

I like that it is easy to use for both consumers as well as businesses.

It's also really good at finding out if your app has been used by someone who would be sensitive about their data being shared with others or not. The only downside is that it doesn't have an option for users to report apps they don't want to share any of their personal information with other people (such as my current favorite app - Instacart). This helps me know what type of content those users are interested in so I can better target them down the line.