How does Voice mode work?
In Voice mode, you see a flag and say the country's name out loud. iOS asks for Microphone and Speech Recognition permission the first time so Betsy can hear the answer and turn it into text.
Speech is used only to score the current flag. Betsy does not record it, save it, or send it to a server of its own. If you do not want to grant access, Tap and Type modes work without the microphone.