auki is a jailbreak app for iPhone that provides quick-reply functionality for messages. That means that, with auki, you don't have to spend time switching to and from the Messages app. You can reply to and compose messages from anywhere on the iPhone, be it the Home screen or from inside another app or game. Anywhere. That might sound similar to other jailbreak apps like BiteSMS, but auki takes a different approach, and one I'd really like to see Apple consider for iOS 8.