ContactsPlus 2.7 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software lies within Business Tools, more precisely General. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
ContactsPlus allows you to keep track of individual information for your business contacts, friends and family. You can enter their birthdays and ContactsPlus