It's the classic raffle: you have a list of people and a list of prizes, and you want chance to decide who gets what. Rifael does it in two steps — add the participants, add the prizes, and draw. If there are more prizes than participants, someone can win more than one; if there are more participants than prizes, everyone still shows up in the result, clearly marked as not having won, so there's never any doubt.
It's commonly used for office raffles (a holiday hamper among staff), homeowner associations, sports clubs, groups of friends splitting up gifts, or any situation where something needs to be handed out among a group without anyone suspecting it was rigged.
If you want the raffle to happen at a specific moment — say, live during an event — you can schedule it for an exact date and time and share a link: whoever opens it will see the countdown and the result reveal itself live, without you needing to run it yourself.
Can I redraw if I don't like the result?
Yes, for an instant draw you can redraw as many times as you like before sharing anything — every time you hit draw it's recalculated from scratch.
What happens if I have more participants than prizes?
Everyone who doesn't win still appears in the result, clearly marked as having no prize, so the full list stays visible to everyone.
Do I need an account to use it?
No, not for an instant draw. You'll only need to sign in if you want to schedule it for a specific date and time and share the live link.