Photograph a label and this works out your days of food, water and fuel. Most preparedness apps give you a checklist. This one gives you a number.
7 days free. Works with no signal. Nothing to install.
Your household of 4 would last about 2 days. Generator fuel is your weak link, at 36% of your 7-day goal.
The reason nobody keeps an inventory is that typing four hundred items is unbearable. So don't. Point your phone at a can and it reads the name, the date and the shelf life, and files it.
A #10 can from a cannery has no barcode. Neither does a bucket of wheat or a repacked case. Barcode apps fall apart on exactly the food you're storing — this reads the label instead.
Calories against who's in your household. Gallons against generator burn rate. Propane in pounds against BTU. You get days, not a tick in a box.
An email when food is going off, fuel is going stale, a propane cylinder is due for requalification, or a licence needs renewing. The part that works while you aren't thinking about it.
Ticking "generator" says you own one. It doesn't say whether you can run it until Friday. At half a gallon an hour for eight hours a day, a week needs about 28 gallons — a number most people have never worked out.
| Checklist apps | Days of Supply | |
|---|---|---|
| Food and water in days | Some | Yes |
| Generator runtime from stored fuel | No | Yes |
| Propane by cylinder size, and what can actually burn it | No | Yes |
| Whether your gas furnace works in an outage | No | Yes |
| Days of medication, per person | No | Yes |
| Label scanning instead of typing | No | Yes |
| Works with no signal | Some | Yes |
Everyday rotation and long-term storage tracked separately, because a case of soup and a bucket of wheat aren't the same plan. Shopping list built from what's below your minimum.
Bottles you can carry counted apart from the water heater and the barrels, because if you have to leave, only what you can lift comes with you.
Gasoline, diesel, kerosene and 2-cycle counted separately — they aren't interchangeable. Propane split by cylinder size, since a generator can't run off green canisters.
Quantity divided by daily doses, per person. Critical medications warn far earlier, because a 90-day fill needs planning rather than a shop trip.
A 72-hour bag per person and pet, a kit per vehicle with seasonal add-ons, and home readiness gear. Printable one-pagers for the glovebox.
Passports, insurance, hunting licences and permits, each with its own renewal warning — a licence takes a week, a passport can take two months.
No item limits, ever — log as much as you like on the free plan. Scanning is metered because each photo costs us a real API call, and typing items in by hand is never limited.
7 days free, then $59.99 a year. Cancel any time in the app.
A week of food at home tells you nothing about the cabin. Each property gets its own number.
No. Most people using it are keeping a year's supply, rotating a deep pantry, or just tired of finding expired food. Hunters and people with a cabin use it for the licence and fuel tracking. You don't have to expect the worst to want to know the number.
No — that's the whole point. Photograph a label and it reads the name, the date and the shelf life. Most people do a shelf at a time. Manual entry is always there when you want it, and it's never limited.
Yes. It's installed to your phone's home screen and everything you've logged is available with no signal. Changes sync when you're back online. There are printable reports too, for when the phone is dead.
Not from a store. Open it in your browser and add it to your home screen — it behaves like an app, updates itself, and doesn't need App Store approval to fix things.
Seven days with everything unlocked. We take a card at the start so it carries on without you having to think about it, and we email you before the first charge. Cancel in the app at any point and you won't be billed — you keep your inventory either way.
It's yours. Export it to a spreadsheet whenever you like, and delete your account whenever you like. We don't sell it and there are no ads.
No. It counts what you enter and divides by the doses you tell it. It doesn't suggest doses or how much to keep — that's between you and your prescriber.
Two minutes to set up your household, one photo to start the ledger. Free to log everything, 7 days to try the rest.
Open Days of Supply