The best prediction market apps in the US (September 2026)
Six apps compared on safety, markets, costs, ease of use and where they work, with today's welcome offers.
Short answer (checked 27 September 2026): For most US beginners, Kalshi is the best all-round prediction market app: fully CFTC-regulated, every kind of market, and it works on any device. Polymarket is the pick for iPhone users who want the biggest markets. ProphetX is the best for sports only. OG, Novig and Rebet are good second accounts depending on your state.
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Quick comparison
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| App | Best for | Devices | Offer | Code |
|---|---|---|---|---|
| Kalshi | Best overall, most markets | Web, iPhone, Android | Trade $25, get $25 | WINPREDITCS |
| Polymarket | Biggest markets (iPhone) | iPhone | Deposit $10, get a $50 trading bonus | WIN |
| ProphetX | Sports only | Web, mobile | Trade $50, earn $75 | WINPREDICTS |
| OG | Simple app, any device | Web, iPhone, Android | Trade $25, get $25 in rewards | WINPREDITCS |
| Novig | Set your own sports price | Web, iPhone, Android | Deposit $10, get $25 in trade credits | WINPREDICTS |
| Rebet | Social sports with friends | Mobile | 100% purchase match up to $100 | WINPREDITCS |
1. Kalshi: best overall
The most complete US-regulated prediction market, with economics, politics, weather, culture and sports markets and a clear fee formula.
Kalshi offer, checked 27 September 2026
Trade $25, get $25
Promo code: WINPREDITCS
Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information. Terms apply.
2. Polymarket: best for iPhone users
The world's largest prediction market, now CFTC-regulated in the US through its iPhone app. Deep trading on politics and global events.
Polymarket offer, checked 27 September 2026
Deposit $10, get a $50 trading bonus
Promo code: WIN
iPhone app only. 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. Terms apply.
3. ProphetX: best for sports
Peer-to-peer sports exchange with no house margin in prices, licensed by the CFTC.
ProphetX offer, checked 27 September 2026
Trade $50, earn $75
Promo code: WINPREDICTS
New ProphetX traders, 21+. Deposit and trade $50 to unlock the $75 trading bonus. Eligibility and limits vary by state. Terms apply.
4. OG: easiest on any device
Simple event-contract app that works on web and both phone platforms, in around 40 states.
OG offer, checked 27 September 2026
Trade $25, get $25 in rewards
Promo code: WINPREDITCS
Paid partnership with OG. New users only. Terms and conditions apply. Trading derivatives involves risk and may not be appropriate for all. Availability subject to jurisdictional limitations. For more information, visit OG.com. Terms apply.
5. Novig: best for setting your own odds
CFTC-regulated sports exchange for price-focused fans aged 21+. It dropped its sweepstakes model and relaunched with real dollars on 4 August 2026, and was reported live in 47 states plus DC, including California (not Nevada, Arizona or Michigan).
Novig offer, checked 27 September 2026
Deposit $10, get $25 in trade credits
Promo code: WINPREDICTS
New users only. Restrictions & requirements apply. Not available in all states. 21+. Event contract trading involves risk & is not appropriate for all. Consider if it's appropriate for you in light of financial circumstances. See novig.com/terms for information. Terms apply.
6. Rebet: most social
Mobile sports app with a friends feed, in selected states.
Rebet offer, checked 27 September 2026
100% purchase match up to $100
Promo code: WINPREDITCS
New users, 18+ (21+ in some states), mobile app only, eligible states only. Terms apply.
How we ranked them
We weighed safety and regulation, market range, costs, beginner-friendliness and withdrawals. Commissions don't affect the order. Our editorial policy.
Frequently asked questions
What is the best prediction market app for beginners?
Kalshi, for most people: it's fully CFTC-regulated, works on every device and has the widest range of markets. iPhone users should also consider Polymarket.
Can I use more than one prediction market app?
Yes. Many traders keep two or three accounts to compare prices and claim each welcome offer.
Which prediction market apps work in California?
Kalshi, Polymarket (iPhone), OG, ProphetX and Novig are available in California (checked 27 September 2026). Rebet isn't.
