About Lottoeule

Lottoeule answers a very specific question: how much would you have won or lost if you'd played the same German Lotto 6aus49 numbers every week since 9 October 1955? We also calculate what would have happened if you'd put the same money into an ETF savings plan instead. Both with real data, no esoterics, no sales gimmicks.

Who we are

Behind Lottoeule is the Lottoeule editorial team, a small editorial collective under the umbrella of Kapierstau Development UG (haftungsbeschränkt) based in Bernau near Berlin, Germany. We are not a lottery operator, not a bank, not financial advisors. We're people who like data and believe that publicly available lottery numbers plus freely available market data are enough to finally answer an old question with facts.

Full provider information is in the imprint. Data processing and tracking are disclosed in the privacy policy.

What we actually do

  • We calculate. Picks against every single draw since 1955. Era-specific prize quotes, DM/EUR conversion, stake adjustment over the decades. No estimates.
  • We compare. The same total stake invested in a broad ETF savings plan over the same period, using historical S&P 500 Total Return data.
  • We explain. Probabilities, myths like "hot numbers", prize-quote optimization. Including uncomfortable findings.

Where the data comes from

  • Lottery numbers and prize quotes come from the official lotto.de API, cached per draw as JSON. We only import main draws (gameType ID 1 + 2: Wednesday and Saturday, ADR-008).
  • S&P 500 performance comes from a public Total Return dataset (Robert Shiller, Yale, plus more recent monthly sources).
  • Probabilities and comparisons are sourced from peer-reviewed publications cited in each article. Example: NOAA for lightning-strike risk, Tulane University for asteroid-impact risk.

How we calculate

Every draw lives in the database as a 64-bit bitmask; your tips are prepared the same way. The match is then a single CPU instruction per draw. With ~5,000 main draws × 12 tips we're talking about ~60,000 comparisons per evaluation, fast, deterministic, traceable.

For prize-class assignment we use four historical eras (1955, 1956, 1991, 2013) where game rules changed. A combo from 1956 is scored against 1956 quotes, not today's.

We don't open-source the entire codebase, but every important architectural decision is documented as an ADR in our internal decisions log. If a calculation question keeps you up at night, write us.

Sources & references

So our claims stay verifiable, here are the external primary sources our articles rely on. Individual articles link directly to this section at the relevant points.

What we don't do

  • No play recommendations.
  • We don't sell or broker lottery tickets.
  • No affiliate links to gambling.
  • No trackers beyond anonymous reach measurement (self-hosted Umami).
  • No storing personal data without clear cause.

Responsible play

Gambling can be addictive. If you or someone in your circle notices play getting out of hand, find help on our information page or via the BZgA hotline 0800 137 27 00 (free, German-speaking).

Contact

Write us at kontakt@lottoeule.de. We read every email.