Mixing Faces is another photo based app for the iPhone that allows you to manipulate and merge two pictures into one. The whole idea behind the app is to do exactly what the title says, mix faces. That means that you can combine two pictures of separate people into one unique picture. In theory, that is.
The app gives you two options to load in the pictures: camera or gallery. You can select where you get each picture separately so you're not locked into using just one specific location. Once you have the two pictures, you hit the mix button in the center and get to work.
Pressing the mix button gives you a few additional options. You can now move, change the opacity of, modify the height and width, and even rotate in any direction. The issue is, this is all just for the top picture. What's worse is that it really just looks like you've got another ghost picture behind it when you finish.
The button on the right allows you to save your ghosty photo for whatever reason you deem. You don't really have to justify why you want a ghosty looking photo. You more have to justify why you have this app on your iPhone when it falls so short of its intent.