UberPOV 3.7 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.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This free Mac application is an intellectual property of MegaPOV Team.
From the developer:
UberPOV is an extended version of the free POV-Ray 3.7 ray tracer. In order to use the extra render options, put them in an INI file and select that file in the "Files & Paths" section of the rendering preferences.
All options in the INI file are processed last and overwrite those set in the preferences panel if listed in the INI file.