• ability to turn sideways for easier typing
• ability to scroll easier within a list, especially when editing a previously made list
• ability to see your friend's lists
• ability to see comments made on your lists
• ability to search random lists
• ability to leave comments on lists
• ability to edit your profile info
• ability to change profile picture
• ability to change your background image
• ability to see the guide so you can remember how to do the links, strikeouts, etc
• ability to organize your list in ABC order like the website

basically make it an easier way to access the webpage rather than having to go to safari to do everything... especially for $3.99.