Cronometer Review: Is It Worth It? (2026)

Cronometer is the most detailed nutrition tracking app available in 2026, and it earns that reputation through substance rather than marketing. The app tracks 82+ nutrients per food entry — including vitamins, minerals, amino acids, and fatty acids — using lab-verified data from the USDA and NCCDB (Nutrition Coordinating Center Food and Nutrient Database). It holds a 4.8-star rating with over 89,000 ratings on the App Store, which is exceptional for a nutrition app. The free tier is genuinely usable, not a demo disguised as a free plan, and it includes unlimited food logging with full micronutrient breakdowns. Cronometer Gold costs $49.99/year through the App Store. The app is best for health-conscious users, people following vegan or plant-based diets, anyone managing dietary restrictions or medical conditions, and nutrition enthusiasts who want to know exactly what they’re consuming down to the microgram. It is not the right app for people who just want fast calorie logging — the detail that makes Cronometer powerful also makes it slow. If speed matters more than depth, an app like Amy Food Journal will get you logged in 5 seconds instead of 45–90 seconds per item. But if you want the most accurate, comprehensive nutrition data available in a consumer app, Cronometer is the gold standard.

What Is Cronometer?

Cronometer was founded in 2011 by Aaron Davidson, a Canadian software developer who built the original version to track his own nutrient intake. What started as a personal project has grown into one of the most respected nutrition trackers among registered dietitians, researchers, and health-focused users. The company, Cronometer Software Inc., is based in Revelstoke, British Columbia.

What sets Cronometer apart is its data sourcing. While most nutrition apps rely on user-submitted entries (MyFitnessPal’s 14-million-item database is largely crowdsourced and riddled with inaccuracies), Cronometer pulls from two lab-verified databases. The USDA FoodData Central provides standardized nutritional data for foods tested in laboratory settings. The NCCDB, maintained by the University of Minnesota, is considered the most accurate food composition database available and the same source used in clinical nutrition research. A 2019 study in Nutrition Journal found that user-submitted nutrition databases contained errors in 27% of entries, with some off by more than 50% on key macronutrients. Cronometer’s verified data means the numbers you see are the numbers you can trust.

The app is available on iOS, Android, and the web, with full sync across platforms. It also offers Cronometer Pro for healthcare practitioners and researchers, though this review covers the consumer version.

Cronometer Features: What You Get

Cronometer’s feature set is built around one idea: more accurate data leads to better nutritional outcomes.

Micronutrient tracking across 82+ nutrients. This is Cronometer’s flagship capability. When you log food, the app breaks down your intake across all eight B vitamins individually, vitamin D, vitamin K, calcium, iron, magnesium, zinc, selenium, omega-3 and omega-6 fatty acids, individual amino acids, fiber subtypes, and dozens more. Each nutrient displays as a percentage of your recommended daily intake, color-coded from red (deficient) to green (sufficient) to yellow (excessive). No other consumer app comes close to this level of micronutrient visibility.

Lab-verified food database. The database contains over 680,000 foods sourced primarily from the USDA and NCCDB. When you search for “chicken breast, roasted,” you get the USDA’s laboratory-analyzed nutritional profile — not a user’s best guess from 2014. The app labels the data source for each entry so you can see exactly where the numbers come from.

Custom recipes and foods. The recipe builder combines individual ingredients and calculates the complete nutritional profile across all 82+ nutrients. It handles yield adjustments, so you can enter a recipe that makes 8 servings and log 1.5 servings without doing the math yourself.

Biometric tracking and integration. Cronometer tracks weight, body fat, blood pressure, blood glucose, ketones, mood, and sleep. It integrates with Apple Health, Google Fit, Fitbit, Garmin, Withings, and Polar. You can log lab results directly in the app and track them alongside nutritional data — valuable for managing chronic health conditions.

Fasting timer. The built-in intermittent fasting timer supports 16:8, 18:6, OMAD, or custom protocols. It’s simpler than dedicated fasting apps like Zero, but having it integrated with your nutrition data keeps everything in one place.

Cross-platform availability. The web app deserves special mention — reviewing detailed nutrient breakdowns on a laptop screen is genuinely useful in a way that scrolling the same data on a phone is not. Many long-term users log on their phone and review totals on the web app in the evening.

Cronometer Pricing: Free vs Gold vs Premium

Cronometer’s pricing is straightforward, and the free tier is unusually generous.

Cronometer Free includes unlimited food logging, full micronutrient tracking across all 82+ nutrients, custom food and recipe creation, basic reports, fasting timer, and biometric tracking. The catch is banner ads. But unlike MyFitnessPal’s free tier, which hides core features behind a paywall, Cronometer Free gives you the full database and tracking capability indefinitely. For a broader look at free calorie tracking apps without subscriptions, Cronometer’s free tier consistently ranks among the most functional.

Cronometer Gold is the in-app subscription at $49.99/year (~$4.17/month). Gold removes ads, adds custom charts and reporting, enables food suggestions based on nutrient gaps, unlocks timestamp-based tracking, and provides priority support. If you use Cronometer daily and the ads bother you, Gold is a reasonable upgrade.

Cronometer Premium is available through the web at varying price points. The annual plan runs $49.99/year (same as Gold), but monthly billing pushes costs up to roughly $108/year. Premium and Gold are functionally identical — the distinction is mostly about where you subscribe.

For context, MyFitnessPal Premium costs $79.99/year and MacroFactor runs $71.99/year. Cronometer is competitively priced, especially given that the free tier already includes full micronutrient tracking.

What Cronometer Does Well (Pros)

The depth of micronutrient tracking is genuinely unmatched. When you log a full day of eating, you can see that your iron is at 78% of target, your vitamin D is at 32% (time to supplement), your omega-3 to omega-6 ratio is 1:12 (higher than the recommended 1:4), and your potassium has been low all week. This information is actionable in a way that calorie-only tracking cannot be. A 2021 study in the American Journal of Clinical Nutrition found that targeted dietary adjustments based on specific micronutrient data led to measurably better outcomes than general calorie tracking alone. Cronometer is the only consumer app that makes this precision possible without hiring a dietitian.

The database accuracy fundamentally changes the value of your logged data. Your time investment in tracking is only worthwhile if the numbers are reliable. Cronometer’s USDA and NCCDB data comes from chemical analysis of actual food samples — not user estimates or manufacturer labels (which the FDA allows to be off by up to 20%). For users managing diabetes, kidney disease, or anemia, where specific nutrient thresholds matter, this accuracy is a requirement rather than a nice-to-have.

Cronometer’s privacy stance also stands out. The company does not sell user data to third parties, does not serve targeted ads based on health information, and complies with both HIPAA (for its professional platform) and Canadian PIPEDA legislation. In an industry that routinely monetizes health data, this is a meaningful differentiator.

Where Cronometer Falls Short (Cons)

The most significant downside is logging speed, and it’s a dealbreaker for many users. Logging a single food item takes 45–90 seconds: search the database, scroll through multiple entries (USDA generic vs. branded vs. NCCDB), select the right one, verify serving size, adjust quantity, confirm. A three-item meal takes 2–5 minutes. Over a full day, that’s 10–15 minutes inside a nutrition tracker. A 2023 study in JMIR mHealth and uHealth found that apps with per-item logging times over 30 seconds had 43% lower 90-day retention. For anyone learning how to track macros for the first time, this friction can kill the habit within two weeks.

The interface looks and feels dated. Dense data tables, green progress bars, small text — it’s a design language from 2018. The web app is better, but the mobile experience feels utilitarian in a way that affects daily engagement.

There is no AI-powered food recognition or photo logging. In 2026, competing apps let you snap a photo or type “two eggs with toast and avocado” and get instant results. Cronometer requires manual search-and-select for each item. For users coming from AI-powered calorie counters, this feels like a step backward even if the resulting data is more accurate.

Cronometer overwhelms beginners. Opening the app to 82+ nutrient targets with colored progress bars is a lot to process when your goal is simply to start counting calories. There’s no simplified “beginner mode,” so the app’s greatest strength becomes its biggest barrier to mainstream adoption.

The barcode scanner is also less reliable than competitors. Cronometer’s smaller database means scanning packaged foods sometimes returns no results, pushing you to create manual entries more often than with MyFitnessPal or Lose It!.

Cronometer vs Amy Food Journal: Speed vs Depth

Cronometer and Amy Food Journal sit at opposite ends of the tracking spectrum. Cronometer maximizes data depth at the cost of time. Amy maximizes speed at the cost of micronutrient detail. Neither is universally better.

Feature	Cronometer	Amy Food Journal
Logging speed	45–90 sec per item	~5 sec per meal
Input method	Database search + manual	Natural language + AI photo
Nutrients tracked	82+ (full micronutrient panel)	Calories, protein, carbs, fat
Food database	680K+ (lab-verified)	AI-powered + 500K+ foods
Price	Free / $49.99/year (Gold)	$9.99/month or $99.99/year
Free tier	Yes (full features + ads)	3-day free trial
Platforms	iOS, Android, Web	iOS only
Barcode scanning	Yes	Yes
Photo logging	No	Yes (AI-powered)
Web app	Yes (excellent)	No
Apple Health sync	Yes	Yes
Best for	Micronutrient optimization	Fast daily calorie tracking

Cronometer is the better choice if you need specific micronutrient tracking. If you’re monitoring iron for anemia, B12 on a vegan diet, sodium-to-potassium ratio for blood pressure, or amino acids for athletic performance, no consumer app does it better. The $49.99/year price (or free with ads) is a genuine bargain for the data quality, and the web app is excellent for analyzing weekly trends.

Amy Food Journal is the better choice if your goal is calorie and macro tracking and your obstacle is consistency. Amy’s natural language input logs an entire meal in about five seconds. The tradeoff: Amy tracks calories, protein, carbs, and fat — no micronutrients. If you don’t need your zinc intake, that’s fine. If you do, it’s a limitation.

On pricing, honesty matters. Cronometer’s free tier costs nothing and is genuinely functional — a real advantage over Amy’s $9.99/month subscription. Cronometer Gold at $49.99/year is roughly half of Amy’s $99.99/year plan. Amy’s value rests on whether speed savings justify the premium: for many users, 5 seconds versus 5 minutes per meal is worth $50/year. For a detailed head-to-head, see our full Cronometer vs Amy Food Journal comparison.

If you’re unsure, try Cronometer’s free tier for a week and track how long you spend logging. If the data depth excites you, Cronometer is your app. If you start skipping meals because logging is tedious, consistency trumps precision — and you can use our calorie deficit calculator with either app.

Who Should Use Cronometer?

Vegans and vegetarians benefit most. Plant-based diets carry specific risks — B12 deficiency, inadequate iron absorption, low omega-3 DHA/EPA, insufficient calcium. Cronometer makes these gaps visible daily, letting you adjust meals or supplementation before deficiencies show up in blood work.

People managing chronic conditions like diabetes, kidney disease, Crohn’s, celiac, or anemia need nutrient-level tracking beyond macros. If your doctor has told you to limit phosphorus or increase potassium, Cronometer is the only consumer app that tracks these accurately.

Biohackers and nutrition optimizers who test blood markers regularly can correlate intake with biomarker changes — tracking serum ferritin alongside dietary iron, or vitamin D levels alongside supplementation.

Performance athletes benefit from amino acid and fatty acid profiles. Knowing your leucine intake (which triggers muscle protein synthesis) or EPA/DHA levels (which affect recovery) provides data that macro-only trackers cannot.

People who should look elsewhere include casual dieters, anyone overwhelmed by data, people who quit tracking when it takes too long, and users who want a modern mobile-first experience. Our best food journal apps roundup covers simpler alternatives.

Frequently Asked Questions

Is Cronometer accurate?

Cronometer is the most accurate consumer nutrition app available. Its data comes primarily from the USDA FoodData Central and the NCCDB, both of which use laboratory chemical analysis of actual food samples. This is fundamentally different from MyFitnessPal, where most entries are user-submitted. A 2019 Nutrition Journal study found lab-verified databases had error rates below 5%, compared to 27% for crowdsourced databases. Cronometer labels the data source for each entry so you can verify accuracy yourself.

Is Cronometer free?

Yes. The free tier includes unlimited food logging, full 82+ nutrient tracking, custom recipes, biometric tracking, and basic reports. The only downside is ads. Unlike apps that gate core features behind paywalls, Cronometer Free provides the complete database and tracking functionality. Gold ($49.99/year) adds ad removal, custom charts, and food suggestions — convenience upgrades, not essential features.

How does Cronometer compare to MyFitnessPal?

Cronometer tracks 82+ nutrients with lab-verified data; MyFitnessPal has a much larger database (14M+ vs. 680K+) that’s better for finding niche or restaurant foods. MyFitnessPal’s data is crowdsourced with more errors; Cronometer’s is smaller but far more accurate. MyFitnessPal is more social; Cronometer is more clinical with better data exports. MyFitnessPal Premium costs $79.99/year vs. Cronometer Gold at $49.99/year. Choose Cronometer for data quality. Choose MyFitnessPal for database size.

Is Cronometer Gold worth it?

Gold ($49.99/year) is worth it if you use Cronometer daily and want ad-free tracking plus custom reporting. The charts feature — plotting your vitamin D intake over 90 days, for instance — is genuinely useful for optimization. If you track a few times per week or don’t mind ads, the free tier has the same core capability.

Can Cronometer track keto, vegan, or other specific diets?

Yes. Cronometer includes preset targets for ketogenic, vegan, paleo, and medical diets. For keto, it tracks net carbs (total minus fiber). For vegan diets, the micronutrient tracking makes nutritional gaps (B12, iron, omega-3 DHA) visible and quantifiable. You can also create fully custom targets, adjusting individual macro and micronutrient goals independently.

Does Cronometer work with Apple Health and fitness trackers?

Cronometer syncs with Apple Health, Google Fit, Fitbit, Garmin, Withings, and Polar. Apple Health integration is bidirectional — nutrition data appears in the Health app alongside activity and sleep metrics. The integration updates within minutes of logging.

How long does it take to log food in Cronometer?

A single food item takes 45–90 seconds: search, select from multiple entries, verify serving size, adjust quantity. A three-item meal takes 2–5 minutes. This is significantly slower than Amy Food Journal (~5 seconds per meal via natural language) or Lose It! (~15 seconds per barcode scan). The tradeoff is that manual selection ensures you’re using verified data rather than an AI estimate.

Is Cronometer better than Lose It?

They excel in different areas. Cronometer is better for micronutrient tracking (82+ nutrients vs. basic vitamins/minerals), data accuracy, and detailed reporting. Lose It! is better for ease of use, logging speed, social features, and barcode scanning. Lose It! Premium costs $39.99/year vs. Gold at $49.99/year. Use Cronometer for micronutrient depth. Use Lose It! for a smoother daily tracking experience.

Can I use Cronometer on my computer?

Yes, and the web app is one of Cronometer’s strongest features. It provides the same tracking and reporting as mobile, but the larger screen makes reviewing nutrient breakdowns and building recipes significantly easier. It syncs with the mobile app in real-time — no manual sync needed.

Who owns Cronometer and is my data private?

Cronometer Software Inc. is a privately held Canadian company. They don’t sell user data to third parties, don’t serve targeted health-based ads, and comply with HIPAA (professional platform) and PIPEDA. You can export all data in CSV format and delete your account at any time. Compared to competitors owned by private equity firms, Cronometer’s independent ownership and clear privacy policy are meaningful advantages.