QuickPwn allows you to bypass Apple's protection and install not-official programs in your iPhone and iPod touch. So what the hell is QuickPwn doing in Apple's own web apps catalog page?
The answer may be that it is not the actual QuickPwn software, but an iPhone-specific version of a web site called QuickPwn. However, the site's tag line is:
Download QuickPWN, jailbreak iPhone and iPod Touch, games and more!