How bad is my shop?

Bagged and MyFitnessPal

Logs what you ate. Bagged measures what you bought.

MyFitnessPal is a food diary. You record what you eat, meal by meal, and it returns calories and macronutrients against a target you set. It has a large product database and a barcode scanner to make the logging faster.

Bagged never asks what you ate. It reads the receipt from the weekly shop and reports what came into the house, how it was classified and what it cost.

This is the comparison where Bagged has the clearest limitation, so it is worth putting first rather than at the bottom.

The short answer

Different measurements, and the honest answer depends on what you want. A diary measures intake for one person and depends on daily logging. Bagged measures a household's purchases from a record that arrives anyway. Neither substitutes for the other.

Side by side

MyFitnessPal compared with Bagged, feature by feature
FeatureMyFitnessPalBagged
What it measuresWhat you ate.What you bought.
EffortEvery item, every meal, every day.One photograph a week.
Source of truthYour own recollection, entered by hand.A till receipt, produced by the shop.
Who it coversOne person.The household, since a receipt is a household record.
OutputCalories and macronutrients against a target.The share of food and drink spend that was ultra-processed, and the lines behind it.
TargetsCentral to the product.None. No score, no grade, no goal.
MoneyNot covered.Line-item spend and change over time.

What MyFitnessPal does well

  • It measures consumption, which is the thing most people actually want to know about.
  • It handles meals cooked from components, restaurant food and anything eaten outside the home.
  • Calories and macronutrients are precise, well-defined quantities with an established meaning.
  • It can attribute intake to one person in a household.

What it does not cover

  • Everything depends on the user logging accurately, every day.
  • Logging is self-report, and self-report is known to drift towards the flattering.
  • It is a daily commitment rather than a weekly one, so lapsing breaks the record.
  • It does not see what anything cost.

What a receipt genuinely cannot see

A receipt records acquisition, not consumption. It does not know what was eaten, who ate it, what was thrown away, what was already in the cupboard, or what was bought somewhere else. A household of four and a household of one produce very different receipts for the same appetite.

So a food diary answers a question that a receipt cannot. If what you need is intake for one person, this is the wrong tool and a diary is the right one.

What a diary cannot fix

The countervailing point is that a diary is only as good as the logging, and logging degrades. It is heaviest exactly when life is busiest, and the entries most likely to be skipped are the ones that would have moved the number.

The receipt arrives either way. It is complete, it is not edited after the fact, and it costs about ten seconds. That is a smaller claim than a food diary makes, measured far more reliably.

Different altitudes

Calories and macros are a fine-grained measure of one person. The share of a basket that was ultra-processed is a coarse measure of a household. Bagged deliberately works at the second altitude, which is why it does not count calories and has no plans to.

Common questions

Does Bagged count calories?
No, and it is not planned. Calories are a per-person intake measure and a receipt is a household purchase record, so counting them from a receipt would be inventing precision that the data does not support.
Can Bagged tell me what I actually ate?
No. It records what came into the house. It cannot see what was eaten, who ate it, what was wasted or what was bought elsewhere. That limitation is inherent to receipts.
Is Bagged easier than logging food?
It asks for much less: one photograph after the weekly shop rather than an entry per meal. It also answers a narrower question, so the comparison is about scope as much as effort.
Can I use both?
Yes. They measure different things, and a diary covering intake alongside a receipt-based view of what enters the house do not conflict.

See it on your own receipt.

One photo of your shopping receipt shows what share of it was ultra-processed, and where the money went, line by line.

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