application options on the iPhone include: Add, delete, rate, and move, which is simple and doesn't require a lot of change by iPhone/iPod Touch users.
iTunes shows the users a representation of their various home screen(s), which they can delete, move or sort. Most people like to sort by most used so having a one-click option for that would be an immediate improvement.

via: IPhone Apps: iTunes Concept Shows How iPhone App Management Should Have Worked From the Start

See More: App management in iTunes