The 1.0 version of Contacts Sync for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The following version: 1.0 is the most frequently downloaded one by the program users. We recommend checking the downloaded files with any free antivirus. This software for Mac OS X was originally designed by com.TryBest. You can run this application on Mac OS X 10.7 or later.
From the developer:
✦✦Special offer, Only 2.99 dollars now!✦✦
Contacts Sync is a tool which help you sync contacts between OS X and Gmail. With it you can sync contacts from Gmail or backup contacts to Gmail or merge contacts between them effectively. It's fast and very easy to use. You just need to sign in and click "Start Sync".
You may want to check out more software for Mac, such as ContactsSyncWithGroups, Fast Sync or ContactsSync, which might be related to Contacts Sync.