Reading this news story from Russia Today regarding the creation of a new app to track those who unfriended you.
I've taken it for granted that a new app like this can only track changes to your account from the date installed. Not these people leaving reviews.
It's interesting, funny and sad (especially for the devs) to see how people believe what software can do. Then the entitlement and low scores must be painful for something which is free and actually does what it says it does!
Makes me wonder why people unfriended those individuals who wanted this app in the first place.