CameraGenius has been around since 2009 -- a long time in the app world. The developers of this $3 camera app have updated it again and again over its life, hitting version 4.3 in February of 2012. Camera Genius is a jack of all trades. It adds additional shooting options, like a full-screen shutter button and time stamping. It adds sharing tools like quick uploading to Facebook, Flickr, Tumblr, Twitter and Picasa. And it offers editing options: A simple cropping tool sits alongside tons of color filters for styling up photographs.
The app is popular enough to have accrued more than 1.5 million downloads in its lifetime. While some of its features, like burst shooting and anti-shake, have been made redundant by updates to Apple's basic camera app, Camera Genius is a simple tool that provides a lot of functionality in an amateur-friendly interface.