18+ only. Oddsworth never places bets.
Oddsworth takes the bookie's margin out of the price, blends what's left with the Betfair Exchange and a goals model, and shows both numbers on every leg. It builds the slip. You decide, and place it with your own bookie.
UK football today. Horse racing and F1 are on the way.
Build
Ask Claude
Low-risk treble from the 3pm games
fair 93.1% · edge +2.2 pts · odds 1.02
Claude: Arsenal at home to Hull: ours 95% against the bookie's fair 93%.
fair 72.7% · edge +3.8 pts · odds 1.30
Claude: Fulham at home: ours is about 4 points above the bookie's fair chance.
fair 71.0% · edge +4.9 pts · odds 1.33
Claude: Wolves away at Wrexham: ours 76% against the bookie's fair 71%.
Sample prices. Every number is worked out by the app's engine.
Sample prices
No tips, no hot streaks. Every leg gets two numbers and every slip gets one honest chance. Here's an example slip for each risk tier, priced by the app's engine on sample prices.
Every leg 70% or higher
Example slip, sample prices. Not a tip or a result.
Hit chance
0.0%
The chance all three legs land. The bookie's fair price says 48.1%.
Combined odds
0.00
What the bookie pays if every leg lands.
Back per £1
£0.00
The long-run average back for each £1. Under £1 means the price is worse than the chance.
Arsenal or draw
Arsenal v Hull, 15:00
95.3% at 1.02
93.1%
95.3%
+2.2
1.02
Fulham or drawValue
Fulham v Newcastle, 15:00
76.5% at 1.30
72.7%
76.5%
+3.8
1.30
Wolves or drawValue
Wrexham v Wolves, 15:00
75.9% at 1.33
71.0%
75.9%
+4.9
1.33
The same three legs as a Trixie (four bets: three doubles and the treble) come out ahead 55.3% of the time and pay something back 92.6% of the time. The app shows every way to bet a slip, with the cost.
Step 1
Each outcome's price becomes 1 ÷ odds, scaled so the market adds up to 100%. That's the bookie's fair chance.
Step 2
70% Betfair Exchange, 30% a goals model to start. The blend only shifts when tracked results justify it.
Step 3
Legs from different matches multiply into the slip's hit chance. Two legs from one match are blocked: they aren't independent.
Every result you mark goes into the app's Record tab, which checks Oddsworth against itself: of the slips it rated 50 to 75%, how many actually landed? If the chances run high or low, you'll see it there. We'll only publish results on this page once there are enough to mean something.
Ask in plain words and Claude, an AI model by Anthropic, picks the legs and explains each in one line. Every chance and price comes from the app's engine, and it never calls a bet a lock.
Low-risk treble from the 3pm games, no Man City
The bookie's chance with their margin removed, and the app's own estimate from the Betfair Exchange and a goals model. When they disagree, you see by how much.
Arsenal or draw
fair 93.1%ours 95.3%
Fulham or drawValue
fair 72.7%ours 76.5%
Wolves or drawValue
fair 71.0%ours 75.9%
The tick is the bookie's fair chance, the bar is ours. Value means ours beats fair by 3 points or more.
Set a monthly budget and a stake limit, or take a break that can't be cut short. Build stops for the day after a losing day: no chasing.
Doubles, trebles, Trixies, Yankees and more, each priced exactly with its cost. Mark results and the Record tab tracks profit and loss by risk.
Oddsworth is being tested on iPhone now. Want to hear when it's out? Send us an email and we'll reply when it launches.
iPhone only at first. 18+.