I'm going to tell you a secret. I don't have an iPhone! I'm a loyal Samsung user (to the utter dismay of my Apple loving husband), but, I did notice something cool that the iPhone could do that my Galaxy couldn't. Creat "3D" Facebook pictures. It was pretty cool. I saw a few samples and was moderately entertained.
Then I saw that you could create one in PHOTOSHOP on your COMPUTER!!
So I began creating. You can make so much better 3D photos using a computer than a phone. You just need to make a grey scale depth map to go along with your original picture. Watch this video to learn more!!
I hope you enjoyed it! Let me know if you have any questions!