Once purchased, users can change from the bright them to the beta version of the dark theme, lock the app with either an
alphanumeric or simple four
digit password, and display the Superbar at the top of the screen.
Note, there are also options to use a different type of passcode such as an
alphanumeric code, which is a traditional
password, a custom numeric code, or if you're using iOS 9, you can resort the older and less secure 4 -
digit passcode (not recommended).