Download of MusicMath 5.5 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. The program lies within Audio & Video Tools, more precisely Music Production. The actual developer of this Mac application is Laurent Colson. 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:
musicMath is a musical tool that includes a timecode calculator, a tap tempo, a tempo to delay in millisecond and hertz converter, a note to frequency table converter, a sample length converter, a tempo change converter, and a frequency to note converter.
You may want to check out more software for Mac, such as Music Math, which might be similar to MusicMath.