Gen Z Most Used Apps (Between 2012 & 2021) Prepared By: Aya Youssef Executed By: Al Mayadeen 27 Nov 2021 17:56 Is Facebook facing trouble with retaining young users? While every teenager used Facebook back in 2012, only 27% of them say they are active users on the platform in 2021, according to a recent survey by Piper Sandler.