Of the several 3D apps Ive tried, this one is by far the easiest to use and still get great results. If the developers add a couple of features, Ill give a 5-star rating for sure. Those features would be an onion skin view of the first photo while taking the second, and an artificial horizon (or vertical) to help avoid camera twist between the shots.
Ekimac about 3D Camera, v1.6