The more honest food diary.
Other apps ask what you ate. WonderBon shows what you bought. Your receipts become calories, macros, vitamins — without a single entry to type.
Example dashboard after one week of use. Vitamins above 100 % get a striped end-cap, low values are flagged orange. You see immediately where your shopping has gaps.
Why food diaries almost always fail.
Studies show: 80 % of all tracker apps are deleted again after four weeks. That's not down to weak willpower, it's down to structural problems shared by every classic app.
Logging eats time
Record every meal, scan every snack, estimate quantities, search for brands. After three days the motivation's gone, after a week the diary is empty.
Self-reporting deceives
The chocolate bar at 3pm, the croissant at the bakery, the sip of cola in the evening — forgotten, left out, downplayed. Studies show systematic under-reporting.
US-centric databases
Most apps come from the US and barely recognise REWE own-brand, favourite bread or regional products. Generic estimates are often way off.
Discipline doesn't scale
Every meal-tracking effort needs active energy. That works for a two-week diet — not for a lifetime of nutritional awareness.
You knew you weren't eating enough protein.
WonderBon shows you something different: that you aren't buying enough protein. That's a totally different conversation — because you can influence buying decisions far more rationally than spontaneous meals.
When the fridge holds the right protein at the start of the week, you eat it automatically. When the chocolate bar isn't on the receipt in the first place, it doesn't exist. WonderBon moves the lever to where it actually works: before the shop, not before the plate.
"I tried three different calorie apps — deleted all of them after two weeks. WonderBon has been running for three months without me doing a thing. That's the difference." — from beta-phase user feedback
How your food diary takes shape.
Four steps that all happen automatically — you just take photos like you already do:
Photograph receipt
Same as ever. You're already doing this if you use WonderBon — now you get a second analysis for free on top.
AI recognises food items
Every line gets classified. Low-fat quark, wholewheat bread, olive oil, banana — the AI knows what it's looking at.
Nutrients get estimated
From quantity and food type, WonderBon calculates calories, macros and vitamins — based on a curated DACH database.
You see day, week, month
Dashboards show where you stand — and where your shopping has structural gaps. Values are editable, the app learns along.
What the feature delivers.
WonderBon combines a curated food database with precise AI recognition — a few key numbers:
What you see in your food diary.
Six analyses that together paint a precise picture of your nutritional structure — without you ever logging anything.
Macronutrients
Calories, protein, fat, carbs, sugar, fiber, salt — per day, per week, per month. With ranges instead of rigid limits.
Vitamins & minerals
13 vitamins and 8 minerals broken down individually. Low values are flagged orange, excesses marked visually.
Top categories
Which food groups dominate your diet? Dairy vs. pulses vs. sweets — with shares of daily volume.
Per-person filter
In the household, people are cleanly separated. Family shops are split proportionally, personal purchases assigned individually.
Adjustable values
Estimate not quite right? Click in, change the gram count — all nutrients scale proportionally. The app learns along.
History & trends
How has your protein intake developed since January? When was your family low on vitamin D? Trends instead of daily snapshots.
Three analyses that work together.
Macros show what's happening at the big-picture level. Micros show the gaps. History shows where it's headed.
Macro overview
Calorie ring and four bars for the most important macros — at a glance.
Vitamin profile
All 21 micronutrients on a scale — instantly visible where your shopping has gaps.
History & trends
Weekly curves, monthly comparisons, seasonal patterns — from months of receipts.
An important note on honesty.
WonderBon isn't a classic calorie counter. This distinction matters to us — because it's the actual advantage.
We track purchase, not consumption.
If the chocolate sits in the cupboard for a week, WonderBon doesn't know. If your mother-in-law drops off cake, it shows up nowhere. Classic calorie counters track consumption — or at least try to.
Why this still works better: Over weeks and months, purchase and consumption balance out. Someone who buys yoghurt multiple times a week eats yoghurt. Someone who keeps no sugar in the house eats less sugar. Someone who never buys wholewheat bread has a fiber problem.
The real advantage: WonderBon shows your consumption structure — and that's far more telling long-term than the daily log you forget after three days. And it shows the lever where you can actually change something: your shopping.
How WonderBon differs from classic trackers.
Five properties that decide in practice whether a food diary fits into everyday life:
| Feature | WonderBon | MyFitnessPal | Yazio | Foodvisor |
|---|---|---|---|---|
| Manual logging needed | No, automatic | Yes, every meal | Yes, every meal | Photo per meal |
| UK / regional foods | Curated DACH base | Crowdsourced | Yes | Limited |
| Family mode | Per person | No | No | No |
| Still works after 3 months | Yes, because passive | Rarely | Rarely | Variable |
| Honest about self-reporting gaps | Yes, receipts don't lie | No | No | No |
Frequently asked questions
How accurate are the nutrients from receipts?
The estimate is based on a curated database of typical foods. For unambiguous products — milk, yoghurt, banana, wholewheat bread — the estimate is very close to the actual value. For generic line items like "deli meat" or "cheese counter", a realistic average is used. You can refine every value afterwards — the app learns from your corrections.
What's the difference to MyFitnessPal, Yazio or Foodvisor?
Classic trackers are based on self-reporting — you type in what you allegedly ate. Studies show that self-reporting systematically under-records, especially with snacks and small meals. WonderBon flips the principle: we take what you provably bought. That's not the same as consumption — but it's closer to the truth than any app you type into yourself.
Does WonderBon measure what I really eat — or just what I buy?
Honest answer: what you buy. If the chocolate pack sits in the cupboard for a week, WonderBon doesn't know. But: over weeks and months, purchase and consumption balance out. Someone who buys yoghurt several times a week eats yoghurt. Someone who buys no sugar eats none. WonderBon shows your consumption structure — and that's more telling than the daily log you forget after three days.
Which nutrients are tracked?
Macros: calories, protein, fat, carbs, sugar, fiber, salt. Micros: 13 vitamins (A, B1–B12, C, D, E, K) and 8 minerals (iron, calcium, magnesium, zinc, potassium, sodium, phosphorus, iodine). Quantities are broken down per day, week and month — comparable to your needs based on reference values.
Can I adjust the values myself?
Yes. Every food on every receipt can be edited inline — estimated gram count, nutrient values, category. WonderBon scales all derived values proportionally. So the food diary becomes more precise over time, without you having to enter anything every day.
Does this work for families with different people too?
Yes. Every line on every receipt can be assigned to a person or group — for shared shops, amounts are split proportionally. Through the per-person filter you then see your own analysis, your partner's, your kids'. Family big shops are split fairly, personal purchases stay cleanly separated.
When will the food diary be available for all accounts?
The feature is currently in a closed beta for selected accounts. Roll-out for all WonderBon accounts is happening in summer 2026. If you put yourself on the list, you'll get an email as soon as your account is unlocked — no waiting-list spam, just that one notification.
Eat what you want. Know what you eat.
No abstinence, no discipline, no input masks. Just the truth that's already sitting in your receipts — now made visible.
Get on the list — roll-out summer 2026 →