1.Add Facebook SDK 2.App request feature are availble in this project. 3.We need to create app in facebook developer page,. U can see the option ios, App on Facebook. You must create this and have to fill necerssary entries. Ref: http://stackoverflow.com/questions/23083806/facebook-send-invitation-not-working/23083895?noredirect=1#comment35933522_23083895 4.Make sure your facebook app id is same in both developer page and info in xcode. Next, enable sandbox mode and must fill canvas url [under app on facebook category] in developer page.