The 1.23 version of ChordsMaestroFree 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 application lies within Education Tools, more precisely Teaching Tools. This free software for Mac OS X was originally produced by Neonway. 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.
From the developer:
Chords Maestro Free offers all the major chords for 7 musical instruments: piano, guitar, bass guitar, ukulele, banjo, mandolin, and balalaika. The program will also show you instrument-specific music notes or chord diagrams for your chord, as well as the corresponding finger position on your instrument. If you want to switch to a different instrument, you just tap on its picture and explore the chords on the new instrument.
You may want to check out more Mac applications, such as PianoRoll, eduMap or FRS Money Math, which might be similar to ChordsMaestroFree.