App Visibility and Privacy
How to manage the privacy settings for apps, websites and games that you’ve logged into or connected on Facebook
Change who can see what apps you use on Facebook
Why do apps need access to my Facebook information?
Why can't I see some of my Facebook friends in an app?
Which email am I sharing with apps on Facebook?
Block an App
Block or unblock an app or game on Facebook
How can I block app invites from friends on Facebook?
Can people still interact with me in an app if I've blocked them on Facebook?
What happens when you block or remove an app or game on Facebook
Report an app or game on Facebook
What do I do if someone is harassing me in an app connected to Facebook?