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Mac App Store is the simplest way to find and download apps for your Mac.

To download Cobook from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More.


By FullContact Inc.

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Cobook is the unified address book that brings together contact info from your computer, social networks and other sources.


· Syncs with Mac's standard Contacts app

· Syncs with Google Contacts (Gmail)

· Integrated Facebook, Twitter, Foursquare, Instagram, AngelList, LinkedIn and Xing social network profiles (note - some of these integrations available as in-app purchases)

· Organize contacts with tags

· Email or message a group of contacts

· Share contact info via email


· Lifehacker: "very easy to love"

· TechCrunch: "simple, powerful and fun"

· The Verge: featured in "Best New Apps"

Cobook is also available for iPhone. Find out more at

What's New in Version 3.0.4

Fixed bug in Twitter integration.

Fixed LinkedIn search issues.

Improved in-app store.


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Customer Reviews

The latest updates have kind of ruined this app

It no longer syncs consistently with the cloud. It doesn’t seem to parse information well like it used to, and it has become a struggle to get data to map to the proper fields automatically. I don’t know what drove the decision to work on ‘copies’ of data, as it seems to have overly complicated syncing.

Good thing gone bad

This was a very cool idea and a nifty app. However lately - it does not work properly and even for us early adopters who had downloaded the app in its early stages we were not grand fathered into retaining our connectivity to LinkedIN etc. Apps improve this one has taken away features. Won’t be recommending the app to anyone anymore.

Full-featured elegance

If you crack an inner smile each time you encounter elegant design, this one will have you grinning inside. At first, I thought this app would be too bare-bones, but I was looking for something different (from the new Address Book), and the more I played with Cobook, the more I began to discover new features and admire the design. It reminds me a little of some of the old Mac apps, where you could just try something on a new software program, thinking it might work, and it does. I’ve been using it for 3 weeks now, as a total replacement for Address Book, and it works perfectly - I have all the fields I want, in a custom template, with perfect syncing with iCloud (and, through iCloud, to my iPhone and iPad), and I’ve even done some ambitious things with groups (“tags” in the Cobook lingo).

Minuses? I wish there were documentation of each command on each menu, or an ever-present help function in each screen - there isn’t. So that makes the learning curve a tad steeper. But the Cobook website has a blog that fills most of the gaps, and when I had an odd question about setting the default (i.e., preferred) email address for a contact with multiple email addresses, I used the developer’s customer support link on the website and found myself very quickly being supported by one of the developers. (He explained how to invoke a rearranging of multiple email addresses for a contact that I had been trying to do with cursor clicks in the wrong place.)

I have no interest in this software, other than being a very satisfied user who wants this software to be successful.


View in Mac App Store
  • Free
  • Category: Business
  • Updated: Feb 18, 2014
  • Version: 3.0.4
  • Size: 4.8 MB
  • Language: English
  • Seller: FullContact Inc.

Compatibility: OS X 10.8 or later, 64-bit processor

Customer Ratings

Current Version:
All Versions:

Top In-App Purchases

  1. LinkedIn Profiles$2.99
  2. Essentials Pack$2.99
  3. AngelList Profiles$2.99