Photo app which overlays the previously taken photo

[mgpg89]

I want to make a stop motion video, but edit it myself.
Thusfar, I haven't found any good stop motion app in the app store, so I just need a photo app which lets you overlay the previously taken photo onto the current camera view.

Any ideas?

Thanks in advance!

 

[ImStrapped]

Yes! I'd like to know as well.