Fiona 
@Fiona@tech.lgbtAfter the #TransVoiceTraining app insists on allowing massive tracking or me giving google my payment-info to purchase the full version, I’ve started to write my own one. You can try it here: https://ftvt.fiona.onl
All the data-processing is purely in your browser, you can literally just download /main.{html, js, css}, store them locally and open main.html in your browser; the only data that my server stores are the access-log and error-log of nginx.
Now to be very clear: I am not a good web-dev at all, this is kinda my first (depending on what you count: second) somewhat serious project that produces dynamic-websites. The code-base is also not yet cleaned up at all, so don’t be too harsh on that. Furthermore there are a lot of features and improvements that I (or someone else? you?) might add later. Aka: This is more of an open-alpha, but some of you might still find it useful.
If you have feedback or want to contribute, you can check it out here: https://gitlab.com/FJW/free-trans-voice-analyzer/