For me, iPhoneography is becoming an obsession, so of course, I'd want to load up on apps and tools to help me take better pics. First up, the Wide/Macro Phone Lens ($20) from Photojojo.
The lens is easy to install onto any phone — just apply the included metal sticker ring around your phone lens (there are several that fit just about any phone, including those with flash), and your macro lens will grip with ease, thanks to a strong magnetic pull. The lens works like a charm and really does improve the look of your close-ups. One note — your pics may turn out darker than normal in low light, so be sure to compensate with a light source.
Want to see some sample images before you buy? Check out the gallery!