Read the announcement ➔

Collect donations and celebrate your newborn with a fun guessing game.

Create a pool for your baby and invite your friends and family to guess the birth date and weight. The person who guesses closest wins a prize determined by the pool creator.

Example Pool

Date Price Curve
$5.00$50.00Dec 16Jan 6Jan 27
Individual guess price: $50.00
Jan 6
Weight Price Curve
$5.00$50.004 lbs 6 oz7 lbs 6 oz10 lbs 7 oz
Individual guess price: $50.00
7 lbs 6 oz
Total Guess Price (Example)
$100.00

How It Works

Probabilistic pricing: The more likely your guess, the more it costs

We're not just randomly slapping prices on your guesses.

Think of it like this: imagine everyone's guesses plotted on a hill. The peak of the hill is the expected due date or birth weight. If you guess right at the peak, you're paying premium prices because, well, you have the highest chance of being right.

But if you guess way out in left field, like the baby will be born 3 weeks late or weigh 12 pounds, your guess gets cheaper because you're taking a bigger risk.

We cap the prices so nobody goes broke and nobody gets to play for free. It's like surge pricing, for baby predictions…with well-meaning donations to the parents instead of corporate capitalism 😁.

Before the guesses go live, the creators pick one of these models:

  • Standard: Balanced. Close guesses cost more, wild guesses cost less.
  • Chill: Even if you think this baby is arriving on leap day, you're still in the game.

Basically, we're trying to make it fair while keeping it fun. There's actual math involved. If you're interested in that stuff, you can tab over to “for the nerds”.

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