How DayX Works
DayX gives you recommendations for emergencies. To ensure you can trust them, we openly share how they are created.
Where our knowledge comes from
We do not make anything up. Every recommendation on DayX comes from official brochures and guides on civil protection — primarily from Germany (Federal Office of Civil Protection and Disaster Assistance, Federal Office for Agriculture and Food), supplemented by official guides from Sweden, Finland, Norway, Estonia, Poland, and other countries. These countries have been dealing intensively with crisis preparedness for years — we have collected their knowledge, compared it, and translated it into plain language.
Every knowledge page lists its sources at the bottom. If it says “BBK 2025”, you can read the statement in the original document.
How we handle numbers
Every number on DayX — liters of water, kilograms of supplies, number of days — is recorded individually by us, complete with source and date. If an authority changes a value, we change it in one place, and it is updated everywhere on the site. We do not invent numbers for which there is no official source: Instead, you will find a cautious rule of thumb, recognizable by words like “about” or “mostly”.
All values have a review date. After one year at the latest, we check every number again.
How the check is evaluated
The preparedness check is not an exact science — it provides orientation. You answer questions on 14 areas, from water to documents. Each answer gives points: done, partially, still open. At the end, you see what percentage of your preparedness is already in place — and what will bring the most benefit next.
Important: There is no “failing”. The check shows your current status, not your failure. Everyone starts somewhere.
How the supply list calculates
The quantities on the supply list are based on the official stockpile table of the Federal Office for Agriculture and Food (as of 2024) and the recommendations of the BBK: 2 liters of water per person per day, and around 2200 kilocalories of food. We deliberately calculate for children as we do for adults — the sources advise this, and in an emergency, having too much is better than not enough. We always round up.
Two languages, one source
DayX is available in German and English. German is the original language. The English version is machine-translated and automatically checked: numbers, emergency numbers, and technical terms must not change during this process — 112 remains 112. Safety-critical pages (for example, first aid) only go online after a human has read and approved the translation.
What DayX cannot do
DayX does not replace official warnings — that is what the NINA warning app and sirens are for. DayX does not replace medical advice or an emergency call: In the event of a threat to life and health, dial 112. And DayX does not know your personal situation — our recommendations are carefully researched, but general. All information is provided to the best of our knowledge, without guarantee.
And who checks us?
You do. Every source is named, every review date is visible. If you notice an error or a number seems outdated: Write to us — the contact details are in the imprint. That is exactly how it should be.