SNAP for iOS gives you The Power... to appraise your Facebook privacy

SNAP (Social Network Analyzer for Privacy) by BIT Systems does one thing, and one thing only: it looks at your Facebook profile and then "grades you on how visible you are to the outside world." Of course, you can always just go into Facebook itself and look at your privacy settings, which would save you the steps of downloading an app and using it to login to your account, but at least the thing is free. And it does provide a handy and thorough tutorial on Facebook privacy in general. Hit the source link to take it for a spin.