Drawing app that can use live cam view in place of white background?

Drawing ap

I don't need to record, or draw on stored video files, or anything fancy--I just want to be able to draw lines onto the live camera view.

For instance, I'd trace a shape in the world, then carry what I've drawn over to another shape to do a quick comparison. (So drawing on a static photo isn't enough.)

Any recommendations? iPad preferred, iPhone OK too.

Thanks!

 

Perfect! Thanks! I never would have found that.

It's even Universal and a small download.

I'm going to try to use it in teaching juggling. Draw guides for different throws and let people try to follow the lines. Just an experiment.