This app lets you quickly upload full resolution photos to Facebook, Twitter and email or create personal photo magazines.
SoftBox (Prices vary; Android, iOS) - Portrait lighting can be tough, even for professional photographers. It takes a while to master, and can cost you hundreds in equipment. This app gives you a customizable portrait light for much less.
Cycloramic ($1; iOS) - Have you ever seen those store displays where phones slowly do a full spin without being touched? This app can make your iPhone 5 do the same trick without any expensive store displays or even making yourself dizzy!