Here's a breakdown of how your information is used and/or collected by Don't Drop the Beat (bottom line: we try to be pretty good about these kind of things).
Information We Collect
Don't Drop the Beat does not store any information on your device.
Information You Share
There is no option to share any user data through the game. You can always let your friends know that Don't Drop the Beat is an awesome game though!
Don't Drop the Beat does not store anything that would require any kind of security.