OPEN BOOKNo house. Just an open book. Join the board

The leak

Two friends. Opposite sides. The house keeps $9.09.

Ten friends pair off on five games a week and put $100 a side at −110. One of them is right every single time. It changes nothing. Eighteen weeks later they have handed over $4,090.91 — and not one dollar of it was bad luck.

Week 0 / 18
Total wagered $0
House take $0
Group net $0
break even
Ten friends. Nobody is cheating.

−110 is the standard U.S. price: risk $110 to win $100. With $100 a side on the same game, the book collects $200 and pays back $190.91. Every time. That is a fee, not a wager.

The real price

Nobody bets one leg. That’s the whole business model.

A single bet leaks about a nickel on the dollar. The edge compounds with every leg you add — and books know exactly which button you press.

You hand over $100 13.0%
Comes back over time $86.97 Never comes back $13.03
The book pays +596
vs
A fair price pays +700

A three-leg parlay is priced to return $86.97 of every $100. You are down 13% before the first whistle.

Assumes even-money legs at −110, the standard football price. Real 2025 numbers agree: U.S. books held about 6% on straight bets and 19–23% on parlays. Parlays are roughly a third of all money wagered and close to two-thirds of sportsbook revenue.

The threshold

The house doesn’t beat you. The price does.

Forget hold percentages. Here is the only number that decides whether you are a winning bettor: how often you have to be right just to break even.

Break even at a sportsbook 52.38%
Break even against a friend 50.00%
51.0%
45% 50.00% 52.38% 60%

The dead zone — good enough to beat your friends, not good enough to beat the price.

At a sportsbook −110

−$237 after a full season You lose

Head to head with a friend

+$180 after a full season You win
+$180 −$237
Week 1 $417 left on the table Week 18

At 51% you are a winning bettor. At a sportsbook you would still finish the season down.

Season = 90 bets of $100, the same volume as five games a week for eighteen weeks. At −110 a win pays $90.91 and a loss costs $100, so you need 110 ÷ 210 = 52.38% to break even. Head to head with one friend, a win pays $100 and a loss costs $100 — 50.00%. Both lines show expected value, not a lucky season.

The scale

That was ten friends. The country did $166.94 billion.

The leak is not a quirk of your group chat. It is the entire revenue model of a legal industry now operating in 39 states.

Wagered in 2025$0
Paid back to bettors Kept by the house
$16.96B kept

The tax on watching football.

2025 handle $166.94B
Kept by books $16.96B
National hold 10.16%
Hold in 2021 7.5%
Fifth straight year the hold went up.

Source: American Gaming Association Commercial Gaming Revenue Tracker, CY 2025. Handle $166.94B (+11.0%), revenue $16.96B (+22.8%), hold 10.16% (+98 bps). Revenue is growing twice as fast as handle because the mix keeps shifting to parlays.

The loop

Same games. Same picks. Same luck. No house.

This is the identical season you just watched — every game, every result, every winner unchanged. The only thing removed is the counterparty. Watch the group line.

Week 0 / 18
Total wagered $0
House take $0
Group net $0
break even
Every dollar stays in the group.

Same 450 games, same seed, same outcomes. At a book the group’s loss was fixed at $4,090.91 before kickoff. Here the group’s net is exactly $0.00 by construction — every dollar someone lost, a friend won. Expected value per dollar goes from $0.90 to $1.00.

The honest part

You can still lose. You just can’t be taxed.

Every claim on this page is arithmetic. Here is what it is not claiming, so nobody has to find out the hard way.

Not this

Better odds

The lines are the same lines. Nobody here is smarter than the market. You are not getting a discount on the truth — you are getting the same game without a toll booth.

Not this

Free money

It is zero-sum. If the group is flat, somebody in your chat is up and somebody is down. The difference is that the somebody is a person you know, not a public company in New Jersey.

Not this

A place to chase

There is no reload button because there is nothing to reload. The buy-in your group agrees on is the ceiling. That is the structural difference between this and an 11pm live parlay.

The reset

Tuesday, you’re even again

Every member gets the same 1,000 credits every week. Blow it all on a six-leg Sunday and you are not buried — you are just 0–1. Nobody gets run out of the league in October.

The fish problem

Record, not bankroll

Head-to-head weeks mean you play one friend, not the whole board. The best bettor in the group wins more weeks. They do not accumulate everyone else’s money until the group stops playing.

And the part that never changes: this app has never taken a deposit, never held a dollar, and never taken a cut. If a group wants money on it, that is a treasurer and a Venmo thread — exactly like the fantasy league you already run. We take 0%.

The ritual

It looks like a sportsbook. It just isn’t one.

Credits drop Tuesday. You browse the week’s slate, build a ticket, and it locks at kickoff. Phone and desktop, one parlay, start to finish.

The ask

Join the board. Free. No house.

Real NFL games, real odds, real standings, real trash talk. Weekly credits instead of a deposit screen. Whether money is involved is a conversation between you and your friends, and it happens nowhere near this app.

  1. Tuesday 1,000 credits drop
  2. Tue–Mon Bet this week’s slate
  3. Kickoff That game locks
  4. Final The ticket settles
Default

The open board

Everyone ranked, everyone’s tickets visible, badges stack all season. Costs nothing. This is what the button does.

Optional

A friends pot

Run it like fantasy: pick a treasurer, agree a buy-in, settle in Venmo. The app is the scoreboard and nothing else. Nobody rakes it.

Join the board

Not a sportsbook. Not a casino. Does not accept, hold, or pay out money. Sources: American Gaming Association CY 2025 Commercial Gaming Revenue Tracker; state regulator bet-type filings for parlay hold.