If you really wanted to know who unfriended you on Facebook, you can. This app will show you in real time who's decided to invalidate your friend-status with them. Check it out below:

It's called "Who Deleted Me," and it is available as an app for iOS and Android or a browser extension for Google Chrome.

It will tell you whether a friend has unfollowed you or just deactivated their account.

It will tally your friend totals and then show you who's no longer your friend after you sign up.