Cronological Age 3.0 for Mac is available as a free download on our software library. The software lies within Theming Tools, more precisely General. This free software for Mac OS X was originally developed by Jon Brown Designs.
From the developer:
With Chronological Age you can calculate your chronological age. You have to enter your birthday, and today's date and see what the chronological difference is in days, months and years. In the last version it suffered an update of the user interface and the icon elements.
You may want to check out more Mac applications, such as Morph Age Express — Easily Morph Photos, Morph Age Pro — Morph Photos & Videos or Awakening Golden Age CE, which might be related to Cronological Age.