Free Prediction Market Tools
Every tool on PolyMath is free, no account required. Built for forecasting research across Polymarket, Kalshi, and Metaculus.
Your daily workflow for live market movement, source checks, AI analysis, TimesFM drift, EV, and Kelly sizing.
Estimate a position size from your probability, market price, and bankroll assumptions.
Compare your probability estimate with the current market price and review expected value.
Compare YES/NO prices and related events when market prices diverge across venues.
Chain up to 8 positions. See combined probability, payout multiple, and total expected value.
Track your forecasting accuracy over time. Know whether your 70% predictions actually resolve YES 70% of the time.
Enter YES and NO prices to see the house edge, vig-adjusted probabilities, and what you need to break even.
Search the same event across Polymarket and Kalshi. Compare implied probabilities side by side.
Time-series AI forecast of where a Polymarket contract price may drift before resolution.
All tools are free forever. PolyMath does not take custody of funds and has no affiliation with Polymarket or Kalshi. Not financial advice.