Fan on iOS
1. Once you have the latest version of the application, sign in with Facebook.
2. Click on your profile picture in the header and tap on the settings button. (For iPad, Settings is located on the bottom left hand corner of the navigation bar. Tap the settings wheel to access settings).
3. Tap on the row that says "Change Password"
4. Enter a new Password and confirm it
5. Next you will want to go to your social settings and disconnect Facebook