Exactly. They wouldn't give it away. They'd sell it at an exorbitant price. That's not giving it away.
I remember at one point there was a FB app that told you who spent the most time looking at your profile, then generated a photo and tagged people in it. Hilariously I was the top person on my GF's sister's one, not sure why. Not sure where they got the data for that...
Pretty positive all the apps like this were either just random data or fake. I could be wrong, but I believe that none of these apps ever actually worked