Whisperto listens to both sides of your call and writes the line to say next — the actual question, using their numbers, not "consider discussing pricing". The panel is excluded from macOS screen capture, so it never shows up in a screen share. Nothing joins the call: no bot, no participant, nobody is notified. Ask it anything mid-call; it answers from the live transcript. Hang up and it writes the debrief. Everything stays on your Mac.