Scrub is made by the makers of the popular Twikini, Trinket Software, and it is a small application for Windows Mobile Professional that can quickly analyze missing contact information on your device.

It scans through all of your contacts, which takes a couple of seconds, up to a minute, depending on how many contacts you have and then displays a report with all of your contacts grouped by their missing information. You’ll have a group with all your uncategorized contacts, one with all contacts missing a birthday entry, one with contacts lacking a home number entry and so on. You can this way see what information is missing. Tapping on a group will display contacts only in that group, so the list is already filtered and tapping on a contact inside that certain group will open it up for editing so you can enter missing information.