Polymarket or ProphetX — which is better?

It depends on what you trade and what you trade on. Polymarket is the deepest prediction market in the world across politics, news and culture, but its US product is iPhone-only and 18+. ProphetX is sports-only, works on iPhone, Android and web, and is 21+. Sports-first traders on Android or desktop should start with ProphetX.

Which welcome offer is worth more?

Polymarket's is larger in dollars — $50 in credit for a $10 deposit with code VENICE, against ProphetX's $20 for a $10 deposit and a $10 trade. ProphetX's is easier to reach on any device. Both are new-user only, so you can claim each once.

Can I use Polymarket and ProphetX together?

Yes, and it is the strongest two-account setup for a sports trader who also follows politics. Polymarket covers everything outside sports; ProphetX gives you a dedicated sports order book on whatever device you actually own.

Does ProphetX have politics markets?

No. ProphetX is sports-native by design — game contracts, futures and player markets and nothing else. For the 2026 California governor race or Fed decisions you need Polymarket or Kalshi.

Are both available in California?

Yes. Polymarket is open to California residents 18+ on iPhone, and ProphetX is open to California residents 21+ on any device. Both use code VENICE.

Updated this month

Head to head

Polymarket vs ProphetX

The world's deepest all-topic prediction market against America's sports-native exchange. Different jobs, and most traders end up with both.

Advertising disclosure: VenicePredictionMarkets is an independent affiliate publisher. We may earn a commission when you sign up for a prediction market platform via links on this page. Compensation never influences our editorial rankings or reviews. Prediction markets involve real financial risk — you must be 21+ and a US resident in an eligible jurisdiction. Read our full disclosure.

Quick answer

Use Polymarket for politics, news and culture contracts and the biggest welcome credit — $50 on a $10 deposit with code VENICE, iPhone only, 18+. Use ProphetX for sports on any device — iPhone, Android or web — with $20 in credit for a $10 deposit and a $10 trade, 21+, in 49 states plus D.C. Both are CFTC-regulated order books where you trade against other traders and can sell out before an event settles.

	Polymarket	ProphetX
Welcome offer	Deposit $10, get $50 — code VENICE	Trade $10, get $20 — code VENICE
Market focus	Politics, news, sports, crypto, culture	Sports only: games, futures, player contracts
Devices	iPhone only in the US	iOS, Android and web
Coverage	49 states + DC	49 states + DC (not Nevada)
Minimum age	18+	21+
Liquidity strength	Deepest global books on politics and news	Concentrated entirely in sports
Regulation	CFTC-regulated exchange and clearing organization	CFTC Designated Contract Market and Derivatives Clearing Organization
Who sets the price	Other traders (order book)	Other traders (order book)
Exit before settlement	Yes — sell any position anytime	Yes — sell any position anytime

Best for everything else

Polymarket · $10 → $50

How to claim Polymarket promo details →

Best for sports on any device

ProphetX · Trade $10, Get $20

Claim on ProphetX ProphetX promo details →

Polymarket vs ProphetX FAQ

Also compare ProphetX vs Kalshi and Kalshi vs Polymarket.

18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See polymarket.com/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated exchange and clearing organization.

21+ Only. New users only. Restrictions and eligibility requirements apply — ProphetX is not available in Nevada. ProphetX is a CFTC-regulated Designated Contract Market and Derivatives Clearing Organization; it is not a sportsbook. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider whether it is appropriate for you in light of your personal financial circumstances. See prophetx.co for full terms and conditions.