Predict, discuss and compete on play-money markets

OmnidiaMarket is a free, play-money social prediction game. You predict real-world outcomes — sports, politics, crypto, gaming, or your friends’ real lives — using virtual in-app tokens, watch the crowd’s live odds move, and climb the leaderboard. The tokens have no monetary value and can never be redeemed for cash.

Coming to iOS & Android

What is a prediction market?

A prediction market turns a question about the future into outcomes you can back, and the live price of each outcome is the crowd’s estimate of how likely it is — “Yes 64%” means the crowd gives it about a 64% chance. On OmnidiaMarket you do this with free virtual tokens, so it is a game, not a financial product: there is no real money, and nothing to cash out.

Start here

• What is a prediction market? — the beginner’s guide
• How to predict with friends — the play-money group game
• Are prediction markets gambling? — the honest answer
• All articles

Compare

• OmnidiaMarket vs Kalshi
• OmnidiaMarket vs Manifold
• OmnidiaMarket vs WagerLab & Betcha
• OmnidiaMarket vs Stake.us & social sweepstakes apps
• All comparisons

Reference

• Frequently asked questions
• Prediction glossary (30 terms)
• About OmnidiaMarket
• How it works — markets, odds and the LMSR explained