#2 Overall · 2026
Cronometer Review 2026
The best nutrition app for clinical data integrity — 84 nutrients from USDA-verified sources only.
Best for Clinical Nutrition Tracking
Tested 90 days · Last updated March 2026
Who is Cronometer for?
Cronometer is designed for users who need nutritional data they can trust completely. Registered dietitians, nutrition researchers, individuals managing chronic conditions under medical supervision, and health-conscious users who refuse to log against unverified community data will find Cronometer's verified-only database approach uniquely valuable.
It is also an excellent choice for users who prefer logging on desktop — Cronometer is the only top-ranked app with a fully featured web interface. If you weigh your food on a kitchen scale and want academic-grade data behind every entry, Cronometer is the appropriate tool.
Data integrity: the key advantage
Every food entry in Cronometer's core database has been verified against a peer-reviewed laboratory source — specifically USDA FoodData Central, the NCCDB, and other curated datasets. There are zero user-submitted nutrient values in the verified tier. This is in stark contrast to apps like MyFitnessPal, where the community database contains duplicates, incorrect portion sizes, and unverified entries.
The practical implication is significant: when a registered dietitian generates a nutrient intake report for a patient using Cronometer, they can cite USDA values directly. No such confidence is possible with apps that blend verified and community data.
84-nutrient coverage
Cronometer leads the field in raw nutrient count, tracking 84 micronutrients including all essential vitamins, minerals, amino acids, and fatty acid profiles. The nutrient detail page for any food shows values in both absolute amounts and as a percentage of the recommended daily value. Deficiencies are visually flagged with colored indicators that dietitians can reference directly in consultations.
Limitations
Cronometer's main limitations are logging speed and AI capability. Manual database search averages 18 seconds per food entry — significantly slower than PlateLens's 3-second AI photo logging. The Gold tier adds AI photo recognition, but it is markedly less capable than PlateLens for complex or mixed dishes. The interface, while comprehensive, has a steeper learning curve than consumer-focused apps.
Pricing
Cronometer's free tier is the best free nutrition tracking option available — full 84-nutrient access, verified database, data export, and web interface at no cost. The Gold tier ($39.99/year) adds AI food recognition, custom charts, and additional customization. This makes Cronometer significantly cheaper than PlateLens Premium ($59.99/year) for data-focused users who don't need AI photo logging.
Verdict
Cronometer is the benchmark for data integrity in nutrition tracking. Its exclusive use of USDA and NCCDB data, combined with 84-nutrient coverage, makes it the preferred choice for dietitians, researchers, and anyone with medical nutrition needs. It loses points to PlateLens primarily on logging convenience and AI coaching depth.
Pros
- Tracks 84 nutrients — the widest micronutrient coverage of any tested app
- Zero user-submitted data in core database — all entries USDA or NCCDB verified
- Generous free tier includes full micronutrient tracking
- Strong data export for dietitian and research workflows
- Web app available for desktop users
Cons
- Manual logging is slower than AI-based apps (avg 18 seconds per entry)
- Interface can feel data-dense for casual users
- AI photo recognition only available on Gold tier and less capable than PlateLens
Best for clinical nutrition tracking — 84 nutrients from verified sources
Compare Cronometer
Frequently asked questions
- Is Cronometer suitable for clinical use?
- Yes. Cronometer is widely used by registered dietitians and nutrition researchers because all food data is sourced from USDA FoodData Central and the NCCDB — the same databases used in clinical nutrition research. Its data export capabilities and 84-nutrient coverage make it appropriate for dietary analysis in professional settings.
- Does Cronometer have a free tier?
- Yes. Cronometer's free tier is the most generous of any app in our testing. It includes full access to the verified database, complete 84-nutrient tracking, and data export. The Gold tier ($39.99/year) adds AI photo recognition, additional customization, and premium reports.
- How does Cronometer compare to PlateLens for micronutrients?
- Cronometer tracks 84 nutrients vs PlateLens's 82+. In practice, both cover the full clinical spectrum. The key difference is logging method: Cronometer requires manual database search (avg 18 seconds), while PlateLens uses AI photo recognition (avg 3 seconds). Cronometer's data integrity is slightly higher for manually weighed foods; PlateLens excels for real-world eating including restaurant meals.
- What data sources does Cronometer use?
- Cronometer sources all food data from USDA FoodData Central, the NCCDB (Nutrition Coordinating Center), and a curated set of other peer-reviewed databases. No user-submitted nutritional values appear in the verified database — every entry has been reviewed against a laboratory source. This is Cronometer's defining advantage for data integrity.