Share one link and see who is coming. Guests reply Yes, No or Maybe without creating an account, and you get a live head count — including how many people each guest is bringing.
Create the RSVP, copy the link, and send it however you already talk to your guests — message, email, group chat. Nobody signs up. You get a private admin link to manage it and see replies as they arrive.
Yes. Turn on party size and each guest says how many are coming with them. The head count includes the person replying, so the total is the number of people to cater for.
Yes, for up to 100 responses a month and three active RSVPs at once. Paid plans raise those limits; nothing about collecting RSVPs itself is behind a plan.