I’m a non-binary professional voice teacher, n I’m absolutely amazed at how good VocalImage is. While I don’t particularly recommend it for beginners (unless under the guidance of an experienced coach/teacher), I DO recommend it for intermediate n advanced singers/public speakers.
I ESPECIALLY recommend VocalImage for transmasc n masc afab non-binary people, bc it doesn’t put a person into the ‘girl’ box. It just analyzes the voice. For trans femme ppl, I don’t recommend working with VocalImage bc it focuses a lot on deepening the voice, which can create a lot of gender dysphoria unless u r working alongside a teacher who has been trained in voice modification.
I ALSO recommend VocalImage for cis women n men who identify as contraltos n basses! I’m a (non-binary) contralto on the side of tenor who has always been told to talk n sing higher, lighter, brighter. VocalImage WILL NOT force u to do that! It seems to have no considerations of gender whatsoever, n truly allows the voice to sit where it wants to sit!
Tl;dr HIGHLY recommended for professionals n experienced intermediate singers/actors, recommended for beginners under the guidance of a teacher. Recommended for transmasc n afab non-binary ppl, not so much for trans femme ppl unless under the guidance of a teacher. HIGHLY recommended for contraltos n basses!!!!