The app, which launched in early 2017, changes photos with filters to make users look older, younger or swap gender.
But its latest feature was criticised for being racist within minutes of going live.
It allowed people to change their faces to look more black, Asian, Indian or Caucasian in photos.
FaceApp was criticised in April for its "hot" filter which lightened skin tones.
Some users say they were shocked by the new update before even opening the app.