The app has two features - you can check who visited your profile and also who removed you from friends. Just log in to your facebook and that's it! Check all the information with couple of clicks! It's free and you don't have to pay to see the information
Two in one:
1. Who visited, opened, checked, spying my fb profile, who is my stalker, who has a crush on me.
2. Who unfriended me, who removed me from friends, who deleted me.