I had called several of my company back office tech support people to see why I had so many duplicate and sometimes 3 or 4 duplicate contacts. Nobody could figure out what to do. Our CRM system and Microsoft Outlook automatically produce a contact in multiple programs and they all sync together.
I stumbled across this app and my problem was solved in 15 seconds. Had 172 duplicate and over 300 merges. All combined in one tap and about 3 seconds. Saved me.
Stockcade about Smart Merge ., v7.1.1