So this is a location sharing app, and a founder/developer posts privately shared locations on Twitter? Seems like a good reason to avoid using it.
I don't track where the app itself is being used. But I have to store the locations of the reactions to share back to the requester. I happened to find out apple's location simply because they were the only ones to use the app (apart from my tests).
But I don't keep any personal data (the app doesn't require mail/registration/identification etc.) hence it is impossible to connect any coordinates in the database with an existing individual.