Frequently asked questions

JOPP Tool compares a statistical model with live Kambi and Bet365 prices for goals, assists, goal or assist, shots, shots on target, headers, and goals from outside the box.

It is an analytical tool. See our Disclaimer for more detail. Following only positive EV does not warrant guaranteed profits. Bankroll management is advised.

Ready to try it? Create an account or sign in.

JOPP Tool currently covers:

• Premier League (England)
• La Liga (Spain)
• Serie A (Italy)
• Bundesliga (Germany)
• Ligue 1 (France)
• Eredivisie (Netherlands)
• Champions League
• Europa League
• International Football

The same list, with the markets and bookmakers, is in the coverage section on the homepage.

Currently Kambi (used by Unibet, 888sport, and other Kambi-powered operators) and Bet365. Markets include goals, assists, goal or assist, shots, shots on target, headers, and goals from outside the box. Kambi also has a +O1.5 combo (Bet Builder: player scores, assists, or goal-or-assist, plus match over 1.5 goals).

The model estimates the probability of a player scoring at least one goal in the match, based on factors like their historical goal rate, the quality of the opposition, home/away split, and match importance. This probability is converted into a fair odd (1 / probability).

The fair odd in the table is that per-match price. Expected minutes are already included when the model is built. The site does not scale the fair odd by minutes again. Turn + Pen on to add that player's share of team penalties.

Expected Value (EV%) measures how much better the bookmaker's odds are compared to the model's fair odd, expressed as a percentage.

Formula: EV% = (bookmaker odd / fair odd − 1) × 100

A positive EV% (for example +15%) means the bookmaker price is 15% above the model fair odd. A negative EV% means the book price is below that fair odd.

Following only positive EV does not warrant guaranteed profits. Bankroll management is advised.

xMins is the number of minutes a player is expected to play. It accounts for rotation risk, injury status, and starting probability. A star marks a player who has mainly featured as a substitute. Expected minutes are already inside the fair odd, so the table does not apply a second minutes adjustment.

Toggling Pen on for a player recalculates their fair odd to include the probability that their team earns a penalty and they take it (adjusted for penalty conversion rate). This increases their goal probability and lowers their fair odd.

The designated penalty taker for each team is automatically identified (shown with a gold PEN badge). Players marked with a ★ are likely substitutes and are excluded from automatic pen taker selection.

This is a Kambi Bet Builder combination: player scores anytime + match has over 1.5 goals. Because this is a correlated parlay (a high-scoring match makes both goals and player goals more likely), it often offers higher odds than the standalone goalscorer market. Value and EV% use the model’s combo fair price (not the standalone goalscorer fair). When the +O1.5 price beats that combo fair, the cell is highlighted in purple.

Kambi and Bet365 odds are scraped and updated every 15 minutes via an automated pipeline. The freshness of the current odds is shown in the header with a colour-coded dot: green (under 15 min), amber (under 45 min), red (45+ min).

A ★ next to a player's name indicates they are expected to be a substitute or have significant rotation risk. These players are automatically excluded from automatic penalty taker selection, but their goalscoring odds are still shown.

Click Manage Subscription in the app header. This opens the Stripe Billing Portal where you can cancel at any time. After cancellation, you retain access until the end of the current billing period. No partial refunds are issued for unused time.

Current pricing is in the pricing section on the homepage.

Under EU consumer law you have a 14-day right of withdrawal from your first purchase. Email support@jopptool.com within 14 days and we'll process a full refund. See our Terms & Conditions for full details.

Payments are handled by Stripe and support all major credit and debit cards (Visa, Mastercard, American Express) as well as iDEAL. The charge appears on your statement as MATCH-it, the company behind JOPP Tool.

Yes. Card details are entered directly on Stripe's secure servers. We never see or store your card number. Stripe is PCI-DSS Level 1 certified, the highest level of payment security.