Camera app with image overlay?

Hey,

I'm looking for a camera app which can use an image I've taken earlier as an overlay during live camera view (at 30% opacity or so) - and then save the new picture without the overlay.

Planning to use it in a photo project where I take a picture of the same place every day - and want it to be as perfectly aligned as possible.

I've searched both on the app store and google for this; but can't find it..

Anyone seen such an app?

Thanks!