Cronometer Review: Micronutrients and Gold Plan
Cronometer is most useful when a specific nutrient or macro question justifies detailed logging. Match food entries to raw or cooked state and actual portion before interpreting a total; an accurate-looking chart can still reflect the wrong entry. Core logging is free, while Gold is a separate decision about reporting and convenience.
Why Do Nutrition Nerds Love Cronometer?
Cronometer tracks calories, macros and a broad set of micronutrients. It suits someone who wants to inspect specific nutrients or discuss a record with a professional. A preference for detail is not evidence that every user needs to track every available number.
Public website check. Cronometer's Data Sources manual distinguishes lab-analyzed food data from other database sources. Official source.
What an independent food-record comparison found
A 2025 observational comparison had two raters enter 43 three-day food records from Canadian endurance athletes into Cronometer and MyFitnessPal, then compared estimates with a reference nutrient database. Cronometer showed good to excellent between-rater reliability across the nutrients studied and good validity for most, except fibre and vitamins A and D. That result is more specific than a blanket claim that every Cronometer entry is accurate: it concerns the records, database and population used in the study, not a packaged food selected today.
The researchers suggested that differences in fibre definitions and country-specific fortification could explain some gaps. For a reader comparing a micronutrient target with a diary, the practical check is to inspect the exact food entry, its source, preparation state and serving unit before treating a low or high number as a personal finding. We did not reproduce the study or enter a food in a live account; this research does not establish a deficiency or replace a dietitian's assessment.
Micronutrients, Verified Database and Biometrics
The product emphasizes verified nutrition sources and supports food and biometric logging. Check the exact food, preparation, amount and unit: even a well-sourced database cannot know a serving you entered incorrectly. Separate observed biometrics from estimated food intake rather than treating every chart as an equally direct measurement.
Cronometer's raw/cooked help gives an actual named-data example: Broccoli, Raw and Broccoli, Cooked in NCCDB. Match the weight to the state named in the entry: weigh the raw portion before cooking for the former, and the cooked portion after cooking for the latter. It similarly distinguishes Quinoa, Dry from Quinoa, Cooked. Do not apply a dry-food portion to a cooked-food entry simply because the ingredient name matches.
The Data Sources guide distinguishes database-backed generic foods from branded records based on package information. This explains why entry source and preparation matter; it is not an independent validation of the nutrients. This review inspected the documented entry names, not live food records or a nutrition-label sample, and does not invent nutrient values or a completed serving conversion. A missing nutrient remains unknown.
Choose the record before interpreting a nutrient gap
Cronometer's custom-food instructions separate a packaged item, an unlabeled generic food and a home-cooked dish. This is a useful decision before comparing a diary total with a target:
| What you actually ate | Documented entry route | Check before using the total |
|---|---|---|
| A packaged item absent from the database | Create a Custom Food from its package label and enter the label's serving size. | Match the label's serving unit and nutrient amount; a barcode alone does not supply missing values. |
| An unlabeled generic food, such as a fresh banana | Look for a suitable NCCDB or USDA generic entry. | Match preparation and edible amount; a generic entry is not a lab test of your particular portion. |
| A dish made from multiple ingredients | Use a Custom Recipe rather than labeling the entire dish as one packaged food. | Record ingredient amounts and resulting servings; unknown ingredient data stay unknown. |
The provider's editor also distinguishes Delete from Retire: Delete removes diary entries for that custom food, while Retire hides it from the custom-food list but retains prior entries. That matters when correcting a record used in an earlier trend. These routes come from the provider's documentation; we did not create a food or verify a nutrient label in an account.
Logging Effort and Gold Pricing
Core logging and barcode scanning are free. The cited public US Gold table lists US$10.99 billed monthly or US$59.99 billed annually, with ad-free use, photo/voice logging, custom charts and additional tools. The annual option is a full-year payment, not the displayed monthly equivalent charged each month. Confirm the actual offer before paying.
A lighter record is useful only if losing nutrient detail will not undermine the task; it does not reproduce Cronometer's food database. These are published plan options and features, not a test of food recognition or a guarantee of every account's price.
Start with Free when the task is detailed nutrient logging and barcode entry. Gold is relevant for the additional logging methods, custom charts or other listed tools you intend to use. At the cited US prices, five monthly payments total $54.95 and six total $65.94, versus $59.99 paid annually. The annual price becomes lower at the sixth paid month, but a lower bill does not resolve portion mistakes or make detailed tracking appropriate for every person.
Build a Lighter-Touch Nutrition Log in Macaron
Open Macaron chat to adapt the request below. Review account access and plan conditions before creating a tool.
Scale a portion before comparing a nutrient total
Use a detailed nutrition database when the nutrient question depends on product, preparation and portion. A custom record can make arithmetic visible, but it cannot fill an unknown nutrient value or establish a deficiency. Keep the source amount and portion unit together.
Sample request
"Build a manual nutrition record with food description, source note and only a nutrient goal supplied by my clinician. Keep nutrient amount/unit, reference grams and eaten grams separate. Require reference grams greater than zero and eaten grams at least zero; use amount × eaten grams ÷ reference grams only for complete compatible inputs. Preserve unknown values and incomplete totals; do not assess deficiency."
Suggested fields: Date; food description; amount; unit; supplied goal; known value; source note.
Proposed checks with fictional data:
- Adapt the sample request in Macaron and try the fictional inputs below.
- Use a hypothetical 8 mg per 100 g: a 50 g portion gives 4 mg, and a confirmed 0 g portion gives 0 mg for that known food value. A reference portion of 0 g is invalid; an unknown nutrient value must remain missing.
- If a zero reference portion produces a numeric result, reject that entry. If mg and micrograms are combined without an explicit conversion or an unknown value is replaced by zero, correct the inputs and completeness rule before using the total.
Illustrative data check: a nutrient amount given per 100 grams must be scaled to the portion actually entered.
Before comparing similarly named entries, fix the food description and preparation state, then the consumed mass. A hypothetical 8 mg per 100 g scales to 4 mg at 50 g only for that same reference entry; swapping in a cooked or branded item changes the source value, not merely the serving multiplier.
Which workflow fits your needs?
| Need | Cronometer | Macaron example |
|---|---|---|
| Main purpose | A nutrition database and detailed nutrient tracking | A simpler record with chosen fields |
| What you work with | Food lookup, nutrient analysis and supported integrations | Entered amounts, units and professional-supplied goals |
Macaron does not replace a nutrient database or assess deficiency. Use a qualified dietitian or clinician for medical nutrition goals and avoid sharing identifying health records.
Next step
Explore Macaron for a personal tool you can adapt to this task.
Scope and source notes
How this review was checked: Review prepared with AI for Macaron. This article evaluates cited sources and any limited public-site checks stated in the text; no core in-app task or proposed Macaron mini-app was tested.
Review scope: Cronometer’s nutrient logging and Gold subscription. The portion example demonstrates arithmetic without identifying deficiencies or prescribing intake.
Sources reviewed: last updated November 5, 2026. Product details may change; confirm current information with the provider.
| Source | Supported scope and limitation |
|---|---|
| Cronometer Gold | Premium Nutrition Tracker Subscription | Published plan, feature or billing conditions; account offer and region may differ |
| Do I log my foods raw or cooked? | Actual documented NCCDB food names and raw/cooked matching; not a captured live nutrient record |
| Data Sources | Generic/branded record source distinctions; no independent composition validation |
| Create a Custom Food — Cronometer Support | Provider instructions distinguish packaged-food custom records, generic database choices and multi-ingredient recipes; not a live account or label-accuracy test |
| Canadian endurance-athlete food-record validation — Journal of Human Nutrition and Dietetics | 2025 observational comparison of 43 three-day food records; historical app/database and selected population, not current account testing |
Corrections: contact@macaron.im.
FAQ
Does verified food data remove every logging error?
No. A verified database entry can still be the wrong product, preparation or portion for what you ate. Match the label and units, then check the serving amount before treating the nutrient total as useful.
Is barcode scanning always paid in Cronometer?
Its product currently lists barcode scanning as free; other features can have separate plan conditions.
Does an unknown nutrient amount mean zero?
No. An unknown value means the chosen entry or label did not establish that amount. Keep it unknown or use a more suitable source; replacing missing data with zero can make an intake total look falsely low.
When is a simpler log inappropriate?
When removing detail prevents you or your professional from answering the actual nutrition question.
When would the Macaron nutrition log be useful beside Cronometer?
The proposed record keeps a food description, source note and only the nutrient target you supply. It is a lighter manual question log; it does not inherit Cronometer's verified food database, barcode data or detailed nutrient calculations.
Can the Macaron example verify nutrient values or set a medical goal?
No. A fictional portion calculation can check that units and scaling behave as requested, but actual nutrient values require a reliable label or database entry. Use a clinician-supplied target when one is needed; the mini-app was not tested.
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