An easy option to backup your application data

I have been searching a good way to back up application data by user. You may use iCould, that's for iOS 5 and later. Or you can use DropBox, that one is easy and flexible, but you force user to get a dropbox account.

Today I found an easy way, user can do it menully,  backup through iTune file sharing.

http://support.apple.com/kb/HT4094

Simply put this key in your plist file will do the magic, no code required.

UIFileSharingEnabled