GuitarNotesFinder 1.5 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
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. This Mac app is an intellectual property of Neonway. The program lies within Audio & Video Tools, more precisely Music Production.
From the developer:
Learn or improve the sight reading of the notes in any notations, on the 6-string guitar fretboard using the app just a few minutes each day. When you point to a note on a virtual page, GuitarNotesFinder will show you where this note is on a guitar and the other way around, if you click guitar, you will see the corresponding note and hear the sound it makes.