From the a little scary department is the app Been Verified. This app allows you to do background checks on people. Now true all of this information that this app pulls is public information but it's still a little creepy. The app is free and you get one free background check a month, after that it's $1.99 per background check.
When I saw this app I was curious how it worked and mostly how accurate it was, so I ran a test. I did a search for myself and I was the first person who came up. Well my middle name was wrong but my parents names were right. The results I got back where mixed.
When you search for someone, one of the first things that comes up is a list of their family members. My list did have my Mom, Dad, Sisters, Brother, one Uncle and one Aunt (I have 9 aunts and uncles), grandfather, wife, father-in-law, mother-in-law and grandmother-in-law. Then it also gave me the names of my ex-wife, her husband, her mother, father, uncle, grandfather, and someone I'm not sure who it is. Missing from this list of names where my children.
My age was right but I haven't lived at the address they showed for over four years. My current address did show up in the previous address section. As I said earlier my middle name was wrong but under aliases they had my correct middle name listed.
This is were I would be very leery of this app, under criminal it had listed several possible matches that had me being arrested for drugs, causing a bomb to explode, and discharging a firearms. None of these were me.
I'm not sure why you would want to use this app except for being curious or maybe to do a background check on someone is around your kids, however I would not trust the information given in this app. Since I knew my information I was able to sort through what was right and what wasn't but there was a lot of incorrect information. If for some reason you really need a background check ran on someone I would suggest doing it another way.
Free in iTunes