Moment Lenses for iPhone
Moment is an upcoming lens-mounting system for iPhone and other smartphones. At first glance it kind of resembles the Olloclip, but the mounting system is different—it uses a thin, case-friendly metal plate that safely adheres directly to the back of your phone, which the lenses can then be attached to. There are two lenses in the set: Tele and Wide.
The Moment system isn't available on the market just yet, because they're still working on getting funded via Kickstarter. But the idea already looks great and I hope to try it out someday.