Contact Duster Pro is a utility app that helps tidy you address book. This app comes in handy especially when transferring contacts between idevices, from the cloud and importing from webmail.
Once your contact have been imported into your device, you will see five different categories in the the report column. The first two are contacts and groups, which are self-explanatory.
The third category is Duplicated where duplicate entries are stored. The fourth category is Zombies. Zombies is where the e-mail addresses that aren’t connected to a contact are placed. Finally the last category is Graph It! which makes a pie graph of clean contacts, duplicates and zombies.
The only thing I would recommend that was not in this app is how to import/export your contact list from/to other devices/sources.
Overall this utility app is very useful in helping you find the flaws in your contacts and helping you fix them easily and I recommend this app to anyone looking to spring clean their contacts.