There are other apps out there like this, but Lumyer's effects are generally pretty well done. The number of sharing and export options is pretty sweet too.
The illustrations for the product made this hillarious.
Report
So it's okay, the best ones are pretty much shown here. With a couple of them you can indeed create funny stuff, pretty much because it's girls stuff on a boys face. But are they still developing? Like, will there be more options? I just went and tested some in-app buy options as well, but it's OK. Not mind blowing.
Raycast
My Octocat by Github
Product Hunt
Mumble
Avocado app
VC Puzzle
VC Puzzle
Snowroll
YouTeam