Downloading GeometryPad 2.12.3 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this Mac application is Bytes Arithmetic LLC. The software lies within Education Tools, more precisely Science. 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:
GeometryPad is a dynamic geometry application for Mac, iPad, and Android tablets. The tool will become your personal assistant in teaching and learning geometry through practice. With the Geometry Pad program you can create fundamental geometric shapes, explore and change their properties and calculate metrics. The shapes are displayed on a scrollable and zoomable workbook with a rectangular coordinate system.
You may want to check out more Mac applications, such as sciatrope, Analytics to Earth or TreeView X, which might be related to GeometryPad.