If you can see in Appbot that your rating count is dropping there are a few common causes that we recommend investigating.
Check the rating count in the relevant app store
Go to the app store and check that the number matches what you see at the top of the Ratings page in Appbot. Your overall ratings count in the app store will look something like this:
Review the Ratings Over Time for Rating Count
For more information on Ratings…
Check out these resources on Ratings, how to interpret them, how to use the Appbot tools, and how ratings and reviews are different.
You can see our experience with the iOS ratings prompt here.