I hosted a Racket with my 6-year-old daughter

I am not sure what it actually does beyond recording audio - nothing on the beta seems to indicate its specific purpose - I half expected it might be like random zoom for a group of home schooled 6 year olds - maybe they each took turns talking to meet each other - a kind of pandemic business play... The beta is being a bit too coy here... so uh what is it exactly?