Yes, Live Transcribe does seem to be the best around. Details about development are available at https://ai.googleblog.com/2019/02/real-time-continuous-transcription-with.html
That site says that Google partnered with Gallaudet University to develop it.
I am still looking for the best way to use it. I do seem to get a better result by using a mic on a cord plugged into the earphone outlet. That way the mic can be closer to the other person/people but the screen on the phone where it is easy to see to read. There are still errors with my setup but that helped. Yesterday I saw a doctor who has English as her second language (at least — I don't know if she knows more than 2) and is good with English and her side of the conversation did not come in as clearly as mine.
