Tuesday evening. The lights go out.
You know right away how many days you can last.
You scan what you have at home: a barcode, a receipt or a whole shelf. The app works with 3 litres of water and 2,000 kcal per person per day and tells you in days, not as a vague score.
- The sum is shown, so you can check it yourself
- You see what runs out first — in this example, water
- What you haven't entered yet is shown plainly as ‘not measured’
- Reserve water from your boiler and rain barrel counts too
- You keep track of your supplies together with your family
15 days ahead. Limiting factor: Water.
How long you can last
Water
15.8days
on targetFood
18.4days
on targetNeeded per day
12litres
8,000 kcalNorm: 3 L and 2,000 kcal per person per day. This is an example calculation; the app works with what you really have at home, product by product.










