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Social prediction markets for friends

Predict. Bet. Win.

Turn any question into a prediction market. Create private rooms, invite friends, and bet tokens on outcomes you believe in.

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Friend groups
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Bets placed
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Fun guaranteed
Will it rain at the BBQ?72%
Movie night picks horror?45%
Jake finishes the marathon?38%
Team wins the finals?61%
New album drops this month?84%
Sarah brings her famous dip?91%
Road trip happens in June?55%
Promotion by end of Q2?29%
Will it rain at the BBQ?72%
Movie night picks horror?45%
Jake finishes the marathon?38%
Team wins the finals?61%
New album drops this month?84%
Sarah brings her famous dip?91%
Road trip happens in June?55%
Promotion by end of Q2?29%
Getting Started

Three steps to your first bet

01

Create a Room

Set up a private prediction market with custom currency, betting limits, and house rules.

02

Invite Friends

Share a single invite link. Friends join instantly — even as guests, no account needed.

03

Bet & Resolve

Create questions on anything, place bets, and resolve to pay out winners automatically.

Bet on literally anything

From game nights to pop culture — if it has an outcome, you can bet on it.

Game Nights
“Who wins Settlers of Catan?”
Sports
“Will our team make playoffs?”
Pop Culture
“Best Picture winner?”
Work
“Ship the feature by Friday?”
Events
“Rain at the wedding?”
Anything
“Pineapple on pizza — yes or no?”
Why PolyFriends

Built for fun, designed for friends

Private Rooms

Invite-only prediction markets. Your group, your rules, your bets.

Zero Real Money

Play with virtual tokens. All the thrill of markets, none of the financial risk.

Live Odds

Watch probabilities shift in real-time as friends place bets and sentiment changes.

Leaderboards

Track your portfolio, compete for bragging rights, and crown the best predictor.

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“We use PolyFriends every game night. Way more fun than just watching — now everyone has skin in the game.”

A friend group from Austin, TX

Common Questions

Frequently asked questions

What is PolyFriends?
PolyFriends is a free web app that lets friend groups create private prediction markets. Create a room, invite friends via link, and bet virtual tokens on any question — from game nights to sports to pop culture. No real money is involved.
How does PolyFriends work?
Create a private room with custom settings, share the invite link with friends, then create questions on anything. Friends place bets with virtual tokens, and the host resolves outcomes to pay winners automatically using a pool-based system.
Does PolyFriends use real money?
No. PolyFriends uses only virtual tokens for betting. There is no real money, no credit card required, and no financial risk. It is purely for entertainment and bragging rights among friends.
Do I need an account to join?
Not necessarily. PolyFriends offers a guest mode where you can join rooms with just a display name — no email or signup required. You can also sign up with email/password or Google for a persistent account.
What can you bet on?
Anything with an outcome. Game nights, sports, pop culture, work milestones, event outcomes, and any fun question your friend group can think of.

Ready to predict the future?

Create your first room in under 30 seconds. No credit card, no signup required.