Download of ThePeriodicTable 1.0 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
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. The actual developer of this free software for Mac is David Burrell. The application is categorized as Education Tools.
From the developer:
ThePeriodicTable is a basic periodic table that gives you information related to atomic numbers, atomic mass, atomic symbols, and electron shell configuration. The application is very easy to use - all you need to do is select a chemical element from within the periodic table and the app will display the above-mentioned details at a larger scale.
You may want to check out more Mac applications, such as The Periodic Table, which might be related to ThePeriodicTable.