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Independent & editorially reviewed Odds & offers updated June 20, 2026
Reviewing a prediction market app means evaluating it as a trading platform, so we focus on the things that determine whether you can actually get a fair price and get paid. For each app we fund an account, place trades across different market types, and test the full cycle—how deep and liquid the markets are, what the fees actually cost per trade, the range of events you can trade, and how quickly deposits and withdrawals clear. We also weigh the order tools, market resolution track record, and how the platform handles the moments when a market is moving fast.
Each review ends with a clear read on who the platform is best for and where it falls short. Browse the list below for an in-depth look at whichever prediction market app you're considering.
Kalshi is a regulated prediction market platform that allows users to trade contracts on sports, politics, economics, and real-world events. Its exchange-style model lets traders buy and sell positions based on changing probabilities.
Deposit $1, Get $10 Read Kalshi review
OG offers sports-focused prediction markets where users can trade event contracts instead of placing traditional sportsbook wagers. The platform provides real-time pricing, live market movement, and a streamlined trading experience for sports fans.
Unlock Up to $100 in Bonuses! Read OG review
Polymarket returned to the U.S. market in 2026, but state availability remains fluid and I have not found an authoritative state-by-state list from Polymarket itself. Multiple industry sources describe it as available in "most states" with some restrictions.
Deposit $20, Get $50 Read Polymarket reviewNot all prediction market platforms are created equal. Before you put real money into a contract, it pays to understand the differences between the exchanges available to you — how they are regulated, what markets they offer, how their fees work, and how easy the experience actually is. This section is where we do the homework for you, with in-depth reviews of the platforms shaping the prediction markets space.
Choosing a prediction market platform is not much different from choosing a brokerage or a sportsbook. The fundamentals matter: regulation, liquidity, market selection, fees, and user experience. Here is a breakdown of the key factors to evaluate before signing up.
Regulatory status is the single most important factor for US-based traders. Kalshi operates as a CFTC-regulated Designated Contract Market, which means customer funds are held in segregated accounts at regulated US banks, all contracts must be approved before listing, and the exchange is subject to federal oversight. Unregulated offshore platforms like Polymarket offer no such protections. If fund security matters to you — and it should — start with a regulated platform.
Liquidity determines how easily you can enter and exit a position at a fair price. A liquid market means tight spreads between the buy and sell price, which reduces your effective cost of trading. Thin markets can result in wide spreads and difficulty filling orders at your desired price. When reviewing platforms, we assess the depth of order books across different market categories, not just headline trading volume figures.
The breadth and quality of markets varies considerably between platforms. Some exchanges focus heavily on politics and macroeconomics, while others have expanded aggressively into sports. Kalshi currently offers more than 200 event contracts across sports, politics, economics, weather, finance, technology, and culture. We evaluate whether a platform’s market selection aligns with the topics traders on that platform are most likely to follow and have an informational edge in.
Prediction markets typically charge either a per-contract fee or a percentage of winnings. Kalshi charges between $0.01 and $0.07 per contract depending on the contract price, with no deposit or withdrawal fees for ACH bank transfers. Understanding the full cost of trading — including any deposit or withdrawal fees — is essential for sizing positions correctly and evaluating whether a platform is competitive.
While prediction market platforms generally offer smaller welcome bonuses than traditional sportsbooks, new user promotions can still provide meaningful value. We detail the current sign-up offers available at each platform, including any promo codes that unlock additional value. For current offers, see our prediction market promotions page.
The trading interface should be intuitive enough for newcomers while providing the tools experienced traders expect. We evaluate both the desktop and mobile app experience, including how easy it is to find markets, execute trades, manage positions, and access customer support.
Kalshi is the standout platform for US-based prediction market traders. It is the only CFTC-regulated prediction market exchange in the country, which gives it a distinct advantage in terms of legal clarity, fund safety, and long-term viability. Our full Kalshi review covers every aspect of the platform in detail — how it works, what markets are available, the fee structure, the sign-up process, and a clear verdict on who it is best suited for. If you are new to prediction markets and based in the United States, Kalshi is the natural starting point.
The prediction markets space is evolving fast. We will continue to expand our reviews section as new platforms launch, existing platforms grow, and the regulatory landscape develops. Check back regularly for updated coverage.
