If it’s the app I’m thinking of all data is inputted by users. The idea is if you know your neighbor has guns and drinks for instance you can input his name and address and it is shared by all users of the app.
Of course there’s nothing to say that a gun owner can’t download it and enter all left wing college professors or socialist gun grabbing politicians. I fully expect a lawsuit when someone gets shot or has their guns stolen because the were located by the app to shut it down.
Time to pullout the old phone book and start typing info into that app. There are only 57 States. This shouldn't take long.