The 1.2 version of mFPSconverter for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The most popular versions among the program users are 1.2 and 1.0. We recommend checking the downloaded files with any free antivirus. The actual developer of this free Mac application is MotionVFX. The application lies within Audio & Video Tools, more precisely Editors & Converters.
From the developer:
mFPSconverter allows you to change your Motion project's fps within a click
You may want to check out more software for Mac, such as Norrkross Movie, Xmart Volume or File Name Encoding Repair, which might be similar to mFPSconverter.