Cupel

A monstrous sandwich game, full of chaotic condiments and fun lessons.
Will you consume your colossal sandwich, or will it consume you?
Ada & Otto, hard at work.

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What the marks mean The marks show how much a grown-up needs in a day. The numbers come from the National Academies, a group of scientists who study food.

A SOLID mark means they know the number well. A BEST GUESS mark means they had to guess, because there was not enough research. They say so themselves, so we show it.

Two marks means women and men need different amounts. A striped bar means nobody has set a number at all.

These are numbers for a typical adult. They are not your numbers. Your body may need more or less. To find yours, try the USDA calculator, or read about any of these on the NIH pages. Scientists call the solid ones RDAs and the guesses AIs, if you want to look them up.
What it is. A toy. Build a sandwich, see what is really in it. It knows nothing about you, so it cannot tell you what you need — a doctor or dietitian can. The food numbers are close guesses, and we do not track allergens, so read the label on anything you actually buy.

How the marks work

The scientists show their own doubt, so we do too. When they know a number well we draw a solid mark and call it SOLID. When they had to guess, a dashed one, called a BEST GUESS. Most apps draw both the same way, which makes a guess look like a fact.

Vitamin A comes in two kinds, and it matters. The kind in liver, eggs and cheese builds up in your body, so it has a limit of 3,000. The kind in carrots and spinach does not — your body makes only what it needs and leaves the rest. Eat piles of carrots and your hands go a little orange; that is all. Add the two kinds together, like most apps do, and a salad looks scary. This one keeps them apart.

Where the numbers come from

Reference marks are Dietary Reference Intakes from the Food and Nutrition Board of the National Academies of Sciences, Engineering and Medicine, adults 31–50, read from the published tables: vitamins, minerals, macronutrients. Index at NIH. For numbers matched to your age and sex, use the USDA calculator.

Salt: 1,500 mg is the everyday reference; 2,300 mg is a separate figure, the level above which cutting back is expected to lower long-term risk. Vitamin A: 1 unit is 1 mcg from animals or 12 mcg from plants, and only the animal kind carries the 3,000 limit.

Food values are our own approximations. Real ones are free at USDA FoodData Central. We are not affiliated with or endorsed by any body linked here. We cite them so you can read the real thing.

A toy by Navigator’s Log R&D · navigatorslog.netlify.app · © 2026
For fun and curiosity, not medical advice. We collect nothing: no accounts, no cookies, no tracking. Nothing you build is saved or sent anywhere.

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