Questions, answered

A platform for running live, round-by-round fundraising auctions. Instead of one winning bid, participants take turns choosing to donate and stay in, or exit, each round — and the last one standing wins the prize.

Participants use the CapyBidder app on their phone, browse the active event, and register for the prizes they want. There's no opening bid to beat — just register and play. Registering enters you in the first round, which carries the same per-round fee as every round after it.

Yes — and that's exactly how the fundraiser works. Each round a participant chooses to stay in is a small fixed gift to the nonprofit, starting with the round they join, and those gifts are real and non-refundable. Only one person wins each prize, but everyone who played has given to the cause along the way. We'd encourage organizers to make this clear up front — it's part of what makes the game feel good to play.

Organizers run everything from a computer browser: create the event, add prizes, start the auction, and follow the live dashboard as it plays out. No special equipment needed.

CapyBidder is free during beta. After launch, pricing is 2% of auction gross receipts — with no setup or monthly fees. We only earn when you raise money.

CapyBidder tracks what each participant owes across the rounds and produces clear invoices and a results summary for every prize, emailed automatically when the auction ends. Built-in card payments are on the way.

Each turn has a countdown. The app keeps the auction in sync in real time, and if a turn's time runs out, that participant is treated as exiting so the auction keeps moving fairly.

Organizers use any modern computer browser. Participants use the CapyBidder app on iOS or Android phones.