Betbuilder
Model-estimated odds across the props markets in eight leagues. Pick two selections and the app prices them together, accounting for how the two outcomes move with each other.
€35 a month. The demo runs on sample data, so no account is needed.
Four steps to a priced combination
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Choose a match
Pick one of the eight covered leagues and a fixture from the current matchday. The app lists today's matches along with anything kicking off before 07:00 the following morning.
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Open a market
Choose a target such as shots, fouls or cards. The odds table lays out betting lines around the model's predicted value, and you can switch the view between match total, home team and away team.
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Build the slip
Click any over or under price to add it. A slip holds up to two selections, which keeps the joint pricing within the range the models are built to estimate reliably.
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Compare and size
Enter the combined price your bookmaker is showing. The app returns its own estimate for that same combination together with a suggested stake in units.
Why multiplying two prices gets it wrong
Most bet builders treat each leg as independent and multiply the individual prices together. Football outcomes rarely behave that way. A bad-tempered game produces fouls and cards together, so the two legs are driven by the same underlying thing.
Betbuilder instead estimates the chance of both legs landing together, using the same models that price each leg on its own. Backing two overs is not priced the same as an over with an under, and a double on one team is not priced like a leg on each team or a pair of match totals — each case is priced in its own right.
It also keeps the price sensible when one leg contains the other. A team over 9.5 shots combined with the match over 22.5 shots is largely the same event twice, and the pricing treats it that way rather than as two independent bets.
Suggested stake
When the model's estimate is shorter than the price you have been offered, the app sizes the bet with the Kelly criterion and then trims it back.
- Fractional Kelly, scaled by a confidence weight held per market
- On a two-leg slip the lower of the two weights applies, so the weaker market governs the stake
- A hard cap on maximum stake, with the result rounded to a practical size
- Left blank when the inputs are incomplete, which is your signal to skip the bet
Eight leagues, priced on matchday
Leagues covered
Data freshness
The model is rebuilt on matchday, so a fixture is priced on the day it is played rather than days in advance. Prices still move once team news lands, so check the app again before you place.
Any bookmaker
The app prices the combination and leaves the placing to you. Nothing is tied to a specific site, so you can take the same slip to whichever book offers the best price on those exact legs.
Worth knowing first
- Every leg carries the bookmaker's margin, so a combination starts further behind than a single bet does.
- Model output carries uncertainty. A thin edge on screen is usually noise.
- Combinations you build yourself sit outside the tracked record on the results page.
Try it on sample data first.
The demo shows exactly how the pricing behaves before you commit to anything.