I use voice-to-text in the workshop and when taking notes and reviewing a PR. And all the current options are pretty much what you would expect. More focused on accuracy, which is usually quite poor, which, to paraphrase, "It's Erin with an E. Oh for **s sake, Erin. ERIN! E. R. I. N. <pause> N. I said N. Eh-rin. Fine. Whatever." so anything that can improve on that experience will be immensely helpful.
Looking forward to seeing where you go with this, and I hope at some point you make a native desktop application.