Frequently Asked Questions

Answers about how LottoROI works, which lotteries we cover, and how we handle data.

How does LottoROI work?+

Pick a lottery, enter your numbers, and we validate them for that game's rules. We then match them against the official historical draws for that lottery and show you real outcomes and prize tiers, not predictions.

Which lotteries does LottoROI support?+

We currently support 11 major lotteries:\n- Lotto 6 aus 49 (Germany)\n- Eurojackpot\n- EuroMillions\n- Powerball (USA)\n- Mega Millions (USA)\n- SuperEnalotto (Italy)\n- UK Lotto\n- French Loto\n- La Primitiva (Spain)\n- BonoLoto (Spain)\n- El Gordo de la Primitiva (Spain)\nTell us if you'd like another lottery added.

How far back does your historical data go?+

Coverage varies by lottery because each one started in a different year. Current earliest draws in our database:\n- Lotto 6 aus 49: 1955–today\n- Eurojackpot: 2012–today\n- EuroMillions: 2004–today\n- Powerball: 1992–today\n- Mega Millions: 1996–today\n- SuperEnalotto: 1997–today\n- UK Lotto: 1994–today\n- French Loto: 1976–today (current format since 2008)\n- La Primitiva: modern format since 1985\n- BonoLoto: 1988–today\n- El Gordo de la Primitiva: 1993–today\nWe keep backfilling older draws whenever official archives are published.

How often is your draw data updated?+

After every official draw. We fetch fresh results multiple times per week (many lotteries draw twice or three times) and re-run imports if an official source republishes corrected prize tiers.

Are the prize amounts accurate?+

Yes. We store the official prize breakdown for each draw when sources provide it. If a prize tier is still being reported by the lottery operator, we mark it as missing and update it as soon as it is published.

Is LottoROI free to use?+

Yes—LottoROI is completely free. There are no subscriptions or hidden fees.

Do you store my lottery numbers?+

No. We don't store or track the numbers you check. Your searches are processed in real time and are not saved.

Can LottoROI predict future lottery numbers?+

No. Lottery draws are random events. We only show how your numbers performed historically so you understand their past results.

Why should I check my numbers against historical draws?+

It helps you see how often your combination has appeared and what it would have won in the past. It's about transparency, not prediction.

Can I check the same numbers multiple times or use Quick Pick?+

Absolutely. You can check any combination as often as you like, and Quick Pick generates valid random numbers that follow the rules of the selected lottery.

What if a lottery I play isn't listed?+

Tell us which one you need. We prioritize adding lotteries when we have reliable draw and prize data so results stay accurate.

Still have questions?

If you couldn't find the answer you were looking for, reach out any time. We're here to help you understand your lottery number analysis better.