It does what it says.

For the most part it works as says it will do. My only problem with it when you set it to ignore a specific duplicate group say the same phone number for husband and wife since they share the same house number it wont remember the setting. While it is a bit annoying its not the end of the world. Just finished cleaning up over 200 duplicates in right around 30 min. Quick and easy.

Thomas Behrens about PhoneBook CleanMaster