This app was mentioned in 2 comments, with an average of 3.50 upvotes
Don't think it'll do motion tracking but check out the digitaldudz app. They have a bunch of animations intended to pair with their costumes. I'd bet you find something there that will work. They have a cyclops eye that comes to mind.
https://play.google.com/store/apps/details?id=com.digitaldudz.app