This app was mentioned in
with an average of
I submitted this: ShapeShifter
I ended up in quite a rush to hit the deadline so it's not quite as complete or clean as I'd like(especially the code) but I'm quite happy with it.
It uses AnimatedVectorDrawables and voice recognition. You say the name of a shape and it transitions to display it.
Shapes include regular shapes from triangle to dodecagon and a few odd ones like eye and star.
Would be nice to hear how well or not it works for people as I also didn't get the chance to test it on many device/OS version configurations.