It also has a fairly sophisticated face recognition system (accessed, strangely, by long-pressing your face in a live video window, but only while using the rea

It also has a fairly sophisticated face recognition system (accessed, strangely, by long-pressing your face in a live video window, but only while using the rear-facing camera; it's almost like an Easter Egg but isn't) which it uses to do face swaps and other types of animations on top of video. I don't know if the app is designed to intentionally hide features to create some sort of "discovery" experience, but there's a lot more to it than is obvious at first glance.