Who eliminated me? : https://play.google.com/store/apps/details?id=com.impactobtl.friendstrackerfree&hl=es
Free application on Google Play It makes it easy to find out who deleted you from Facebook
Who Unfollowed me? : https://play.google.com/store/apps/details?id=com.webilisim.whounfollowed&hl=en
This app helps you to keep an eye on all the followers who have canceled your follow-up on the instgram