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Prediction Markets

Prediction markets let you trade event contracts on real-world outcomes—sports results, election winners, economic indicators, and crypto prices. Unlike sportsbooks, prices are set by the crowd and move as sentiment shifts, more like a financial exchange than a betting slip. CFTC-registered platforms like Kalshi operate under federal oversight; offshore platforms like Polymarket use crypto settlement. In this section we review the leading prediction market apps and platforms of 2026, including Kalshi, Polymarket, OG, and ProphetX. Each review covers available markets, contract mechanics, fee structure, deposit and withdrawal options, regulatory status, and how each platform compares to traditional sports betting.

7 games reviewed

Games in Prediction Markets

  • Prediction Markets

    Kalshi

    The first CFTC-regulated prediction market exchange in the US — legally trade event contracts on politics, sports, economics, and more.

    Kalshi is the only federally regulated prediction market exchange in the United States, operating under CFTC oversight after a landmark legal battle that established event contracts as legal financial instruments. It is the definitive platform for US residents who want to trade on news, politics, sports outcomes, and economic indicators with full legal compliance. With 184,000+ App Store reviews at a 4.78 average, a continuously expanding market catalog, and the fastest withdrawal pipeline in the prediction market category, Kalshi is the clear top choice for serious prediction market participants.

    9.2 /10
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  • Prediction Markets

    OG

    OG Markets' prediction platform — trade the future on sports, news, and pop culture events with a focus on US accessibility and emerging market depth.

    OG is an emerging US prediction market platform with a genuine product and a growing event catalog across sports, news, politics, and entertainment. Built with a focus on accessible prediction trading for US users, OG has developed a clean mobile interface and a market structure that competes directly with Kalshi on sports and current-events categories. The App Store review base is still growing (855 reviews at 4.42), which reflects the platform's early stage rather than product quality concerns — the trading experience itself is well-designed and the payout process is reliable. Note: OG is not available in New York or Arizona, and sports contracts are restricted in 7 additional states. For US prediction market enthusiasts who want a second account alongside Kalshi, OG is the recommended choice.

    9.1 /10
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  • Prediction Markets

    Polymarket

    The world's largest prediction market by volume — blockchain-settled contracts on global events, but not legally accessible to US traders.

    Polymarket is the world's largest prediction market by trading volume, now fully legal and CFTC-regulated for US users in all 50 states. The platform trades USDC-settled contracts on politics, sports, crypto, geopolitics, and more. Key advantages: no trading fees, tightest spreads in prediction markets, instant cashouts, and deep liquidity on major events. The app has earned 37,000+ App Store reviews at a 4.6 rating. Polymarket competes directly with Kalshi for US traders — it offers a broader market catalog and the liquidity of a global network, while Kalshi has the more established domestic regulatory track record. Strong first pick for serious prediction market traders (as of June 2026).

    7.8 /10
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  • Prediction Markets

    Robinhood Predictions

    Event contracts built into the Robinhood investing app

    Robinhood's prediction markets live inside its main investing app — convenient for existing users, but depth and variety lag behind dedicated platforms like Kalshi.

    7.8 /10
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  • Prediction Markets

    ForecastEx

    Institutional-grade prediction markets inside your IBKR account

    ForecastEx is the cleanest US prediction market for IBKR users — zero maker fees, ~3.80% APY coupon, institutional backing — but newcomers face real brokerage friction.

    7.5 /10
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  • Prediction Markets

    Manifold Markets

    Predict anything. No money needed.

    The best free prediction market app — Mana is play money only, and the Sweepcash real-earnings layer shut down in 2025. Great for learning; not for profit.

    7.2 /10
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  • Prediction Markets

    ProphetX

    A newer US prediction market exchange focused on sports and entertainment event contracts — solid early product with a growing market catalog.

    ProphetX is one of the newer US prediction market platforms, earning a 4.81 App Store rating from nearly 3,000 reviews — a strong quality signal for a product at this stage of development. The platform focuses on sports and entertainment event contracts with a clean, intuitive trading interface. The realistic limitation is scale: ProphetX's market catalog and liquidity pool are materially smaller than Kalshi's, which means thinner order books and wider spreads on most contracts. For prediction market enthusiasts who want to explore the full landscape beyond the two leading platforms, ProphetX is worth adding to the rotation; for most users, Kalshi and OG cover the essential bases.

    4.8 /10
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