Yeah! for groups management
In ten minutes I was able to sort and rearrange my contacts (over 330) into groups. Trying to do this without this app was on my will get to eventually list. Last night I decided I did want to cleanup my address book with an app so I searched and when I found this app it was just what I needed. Its a must have for group customization. I have not really used it as an alternate address book yet. I have only read about its capabilities from the product description and it seems impressive. This is just to let you know that this app is superb when it comes to contacts grouping.
Jabe8 about
ContactsTap