Who Deleted You on Facebook
There is a new app for Andorid and iOS foor keeping track of Facebook friends. And not only that, it lets you know which friends are no longer on your friends list. It might be because they have deactivated their account or they have just deleted you from their friends list. Just like the Who Unfollowed me app for Twitter accounts.
This terrific app is called Who Deleted Me on Facebook.
Of course, since it tracks your friends list, it can track who deleted you only form the moment when you install the app, because then it takes a snapshot of friends list. So, you cannot check who deleted you earlier.
This app can also be installed as a browser extension.