I've used it in the latest version. It works best right after sleeping -- that's when all the updates get saved to the file it opens -- it reliably finds the quest robbers but interestingly doesn't do that great at finding regular robbers. i tried it without the quest up and it told me to go like 400 tiles away, and when i got there, i checked it again, it said 0 tiles away, but there was nothing there.
with some python knowledge, it can be edited to find other types of animals, too.