HockeyApp for iOS has nothing to do with the sport of hockey and everything to do with maing developers' and beta testers' lives easier. Time was, in order to beta test an app, you had to tether to iTunes and manual transfer over the provisioning and app files, and you had to do it every time the beta updated -- which could be often. Then services like HockeyApp showed up, and they allowed for direct, on-device, over-the-air (OTA) installation and updates of both provisioning files and apps. Hockey will even alert you when updates are available. Moreover, for developers, HockeyApp provides crash reports, feedback, and analytics.