Nutrition that makes sense

Know what you eat.
See how your day adds up.

Log meals in a few taps, keep an eye on your energy, and find food ideas that suit you.

Fitizen is currently in a closed test: new accounts can be created with an invitation link.

What you log shows you your day – and a sensible next step.

01 · Logging

Logging that takes seconds.

Packaged food, home cooking or your usual breakfast – there's a short route for each, and you see exactly what you're saving before you save it.

BarcodeScan the pack and a known product's details are there straight away.
Nutrition label photoProduct not in the database yet? Photograph the label – you check and correct the values it reads before saving.
Just type itNo barcode? Type what you had and how much: “3 boiled eggs” or “200 g cooked rice”.
Your regularsRecent foods with your last portion, your own foods, recipes and favourites.

A value read from the label, one from the database and an estimate are not the same thing – Fitizen always tells you which is which.

02 · Your day

See how your day adds up.

One compact chart shows what you've eaten so far, how much energy you've likely used and where your daily target sits – today or on any past day.

Sample data · intake 1,735 kcal · estimated daily expenditure 2,300 kcal · intake target 1,850 kcal

Logged intakeEach step is the energy of what you ate, added up at the time you ate it.
Estimated expenditureA daily estimate spread across the day by a model – slower while you sleep, faster when you're up and moving. The dashed part after “now” is a forecast.
Intake target – a different thingThe faint line is your daily target, reached at 24:00. It's there for orientation, not as an hourly rule – jumps after meals are normal.
No gadget neededYou don't need a wearable: the estimate starts from your profile, and you can log activity by hand.

The gap between the lines is an estimated energy balance, not measured fat burn.

03 · Ideas

Food ideas that actually fit.

Not sure what to eat? Fitizen suggests something from your daily budget and your habits – a single food or a dish to make.

Simple, Quick or GourmetYou pick the style and can refine it in a few words (“no ham”).
Keep what worksSave an idea as a favourite or as your own recipe; you see the portion before anything is logged.
Your recipes, imported tooBring in a recipe from a web address, check the ingredients, and log a portion again whenever you like.
AI brainstorms, the numbers come from dataNutrition values are calculated from verifiable food data, not guessed by the AI.

Accuracy

What's measured, what's estimated?

Logged and database valuesEvery nutrition value shows its source: the label, the database or your own entry. Missing data is never counted as zero.

Estimates, clearly markedPortions worked out from a piece count are marked as estimates (≈) and can be refined with a weighed amount. Energy expenditure starts from an established formula (Mifflin–St Jeor), and your weight and intake trend can suggest an adjustment.

What the AI doesIt reads labels and suggests ideas – you approve what it reads. The calculations are deterministic and versioned: same input, same result.

You can export or delete your data from your profile and follow the deletion through.

Fitizen is a general wellness and fitness product. It is not a diagnostic device, does not treat disease, and does not replace professional advice.

Questions

Frequently asked

Do I need a barcode for everything?

No. Search foods by name, or type them with the amount, like “3 boiled eggs”. If a packaged product isn't there yet, add it from a photo of the nutrition label – you check the values before saving. You can create your own foods too.

Does it work without WHOOP or another wearable?

Yes, fully. Daily energy expenditure is estimated from your profile (age, height, weight, activity habits), and you can log activity by hand – the activity, start time and duration are enough.

Do I have to install an app?

No. Fitizen runs in the browser on your phone and computer. On your phone you can add it to the home screen so it opens like an app; barcode scanning asks for camera permission in the browser. There is no app-store version at the moment.

How accurate are the numbers?

As accurate as their source: values read from a label or taken from the database are marked as such, estimated portions and energy expenditure as estimates. We don't measure calories from a photo of your plate – from a label photo we read the table values, which you check. Fitizen does not promise any particular weight change.

How do I get started?

Fitizen is currently in a closed test, so accounts can be created with an invitation link. On that link you register with your email address and confirm it. A few basics (birth year, height, weight, activity) and your goal are enough for us to work out a starting daily budget.