I very recently started training my voice, and I used the Voice Tools app that I've seen a lot of other trans people use. I've always been scared of doing it because of the large portion of trans people who describe it as extremely difficult. It is difficult, and I've been so stressed that I didn't want to do it because I thought it'd be too frustrating, but my first W of it is that I learned how to harness an androgynous pitch while speaking. I know that pitch isn't necessarily everything for gendering a voice, and it still feels unnatural, forced, and exaggerated to talk with anything except my "male" voice, but I'm definitely gonna keep going. I feel proud of myself because I used to be very terrible at manipulating my voice, so the fact that I'm at this point alone is a shock to me. This result was from me reading a whole passage on the app's analysis page.
FYI: I want my voice to be androgynous, not feminine, so voice training might even end up being easier for me as a non-binary person than it is for most binary trans women.
As someone else pointed out in this thread, the one pictured is voice tools, but AFAIK, it just tells you pitch. Which is perhaps the smallest aspect about gendering voices? Plenty of cis women have voices that are deep, but still considered obviously female voices and plenty of cis men who have high pitched voices, but almost everyone would assume is a guy. It can still be something to work on, but you should probably look elsewhere for actual guidance. Trans voice lessons on youtube seems highly recommended. I can't say I've done much in terms of formal voice training, so idk.
Thanks, I'm have to watch more of her videos...