The Atomic Mac is a periodic table of the elements for the Macintosh. In addition to the usual information found in such programs, The Atomic Mac also contains a wealth of nuclear information on each isotope, including half life, decay mode, and daughter products.
This version includes changes in the user interface.
The update is free to registered users while the full version is priced at US$20. You can find more information on the product at the company's web site.