Contact Merge is an app that allows merging contacts in the iPhones address book efficiently. A name matching mechanism suggests contact groups that are probably the same - even if you have contacts with similar name, but in different languages!
All the user must do once presented with contact groups is choose whether to merge, delete one contact or ignore the similarities for contacts in the suggested group.
The app allows free merger of up to 5 contacts, to merge more, an in-app purchase is required.