Novig vs ProphetX, with Sporttrade as the closed third case

A Novig vs ProphetX article is useful when it refuses to crown a winner from frozen numbers. Both companies describe peer markets. Novig's about page talks about traders and open limits. ProphetX's about page talks about leaving a model where the book is the opponent. Those paragraphs tell you what each firm wants to be. They do not tell you the cents you will pay on Sunday.

Sporttrade is the control case. The company told the public that online sports betting wagering stopped on May 25, 2026, and that leftover balances would be mailed by check. A "best exchange" list that still treats that order book as open is describing a market the operator has exited. If a new Sporttrade product appears later, score it as a new screen.

Adults 18+ only. You can lose the stake. This is not legal advice and not a map of legal states. Each app accepts or blocks you on its own. The category background is peer-to-peer sports betting and how a betting exchange works. The cluster home is Sports betting guides. The single-app pages are the Novig review, the ProphetX review, and the Sporttrade review. This page does not list promo codes.

Novig, in the product its pages describe, is a place to trade a sports result with other people at a market price, with the book's two-sided pad taken out of the sales pitch. The tradable number can still sit away from the mid if the other side is thin. A no-vig adjective does not fill an empty offer.

ProphetX, in the product its pages describe, is the same family with a very practical split: you take a resting price, or you post one and wait. The skill that shows up in your account is the average fill, not the price you wished had been there. An unmatched post is an order. It is not yet a bet.

Sporttrade published a stock-shaped version of that idea. Contracts, a bid, an ask, a quantity, settlement at a high value if the outcome hits and at nothing if it does not. Their own illustration used a $100 cap. Then the company closed the betting markets. The shape is still a good teaching diagram. The website, if it still shows the notice, is not a place to send money.

Suppose you are choosing between two open tickets on the same side of the same game. App A shows a contract at $48 that pays $100. App B shows $51 for the same $100 payoff. Before any separate fee, A risks less for the same gross payout, so A is the cheaper entry. Suppose A's confirm screen then adds a $4 charge and B's adds $1. The gap shrinks, and it can reverse. Those charges are Suppose figures so you can see the worksheet. They are not Novig's fee and not ProphetX's fee. Read it on the entry for whichever app you actually opened.

Implied probability turns $48 and $51 into percents. Forty-eight percent and fifty-one percent are the break-evens before the extra charge. Do that conversion every time the apps use different odds formats.

Each firm has a sentence it likes. One will talk about traders being welcome. One will talk about the book being gone. One talked about a market that felt like a brokerage. None of those sentences is a fee schedule, a processing time, or a headcount. This comparison will not supply the missing numbers. User totals and payout clocks change, and inventing them would make the table look finished when it is not.

State lists are the same trap. A screenshot of "available in many places" is not your living room. Open each app. The one that blocks you is out of the comparison, whatever a blog claimed last season. The one that accepts you still has a price to audit. Legal status can also differ between a state sportsbook license and a federal event-contract registration. This page will not turn that distinction into advice. Read the label on the app and, if you need a conclusion, ask someone qualified.

Early exit is another false tie. If either open app lets you sell before the game ends, the sale is a second trade at a price someone else will pay. If the button is missing, you hold to settlement. Cash out betting is the general decision. It is not a quote for either brand.

A friend-challenge app is a fourth shape, smaller and social, covered in what a wager app is for. Do not force it into this three-name comparison. A challenge between two friends is not an order book, even when all of them avoid taking the other side themselves.

When the product is a pool rather than a contract, ignore the brand and do the subtraction. Take equals entries minus prizes.

Suppose pool one: 25 people pay $10. Entries are $250. Prizes are $200 and $25. The prize total is $225. Take is $25. Suppose pool two: 25 people pay $10, entries still $250, but prizes are $150 and $40. Prize total $190. Take is $60. The second pool keeps more even though the entry fee looks identical. That is why "same buy-in" is not "same price."

The contract worksheet from earlier sits beside those pools. App A at $48 plus a Suppose $4 charge costs more than the headline. App B at $51 plus a Suppose $1 charge might be the better net. You only know after you write both lines down. Replace every Suppose dollar with the confirm screen before you decide anything.

The table is a drill. Novig's fee, ProphetX's fee, and any future Sporttrade fee are not in it. Those three numbers, if the apps are open, are on three different confirm screens. A closed Sporttrade market contributes no row you can trade.

Compare products that will still take an order.

• Confirm Sporttrade's notice. If wagering has stopped, drop it from the live list.
• On each open app, record the filled price and the size, not the mid.
• Write the fee from that app's confirm screen on the same line.
• Convert both prices to a percent so the formats match.
• If either screen is a pool, compute take as entries minus prizes.
• Let each app accept or refuse your state on its own.
• Check each app's age rule. Eighteen is only the floor for this guide.
• Ignore promo codes. This page does not publish them.
• Stake money you can lose on a miss. Two apps do not halve the risk if you bet both.

Betting the same side in two places is one opinion with two charges. It is not a hedge. A hedge needs the other side, at a price that actually locks something. If you cannot write that lock in dollars, you do not have one.

Use one grid so a peer sports app is not described with a pot's rules.

The 5%, 10%, and 7.88% figures belong to this site's games. They are not a disguised quote for Novig or ProphetX. How a kept percent is calculated in the abstract is in how a cut is calculated. Funding on this site is a US dollar balance, paid in with Bitcoin or with USDC or ETH on Base. That sentence is about those games. It does not describe the exchanges' cashiers.

Pick a row and stay on it. A Sunday total and a Jackpot ticket do not audit each other.

If the comparison was really about a game, go back to the open app and finish the checklist. If the comparison was about getting away from a bookmaker, look at what this site actually runs. Jackpot is a shared pot. Tickets are the position. At settlement 5% is kept and the winner receives 95%. Your chance is your share of the tickets. There is no bid, no ask, and no team.

The draw uses a seed committed in advance. You check it on fairness after the round. The check proves the result matches the commit. It does not prove a sports price was the best available price in a peer market, because those are different claims.

Coinflip is the two-player version of the same 5% rule. Roulette is the 33-slot wheel with the 7.88% Purple or Silver theoretical edge after the win fee. Slott is the 1v1 with the 10% cut when a player wins. PVPspinArena does not operate Novig, ProphetX, or Sporttrade, and it does not rank them. The confirm screen still outranks this page.

Open Jackpot for the shared pot on this site: the live activity block, when present, is fetched from settled rounds, not typed into the article.