Download of Rousseau 1.3 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. This free software for Mac OS X was originally designed by Norman Schmidt.
The application lies within Audio & Video Tools, more precisely Editors & Converters. We recommend checking the downloaded files with any free antivirus. The latest version of the program is supported on Mac OS X 10.6 or later. The bundle id for this app is net.normanschmidt.rousseau. The most popular versions of the program are 1.3 and 1.0.
From the developer:
Rousseau is a melody notation program accessible to anyone (most useful for musicians) ! The seven-note keypad produces ordinary and numbered musical notation (nmn) that appears on screen to the sound of an Italian harpsichord. Buttons allow for playback, key and octave change, accidentals and formatting. A song from your iReal b collection (if installed) may be chosen as a template and then saved as an .
You may want to check out more Mac applications, such as Art Legacy Live, which might be similar to Rousseau.