Skip to content

Cronometer

Track calories, micronutrients, and health metrics precisely.

Not yet verified
Demo online
MIT

Open the official app on cronometer.com

This tool is hosted by its maintainers. Click below to open cronometer.com in a new tab — it's their official demo.

Browse fitness tools →

What's next with Cronometer?

Choose how you want to get started.

Use it free

Open the official tool or demo — no account needed.

Free

Self-host it

Run the open-source version on your own infrastructure.

Open

What is Cronometer?

Cronometer is a science-backed nutrition tracking tool designed to help users monitor their dietary intake, exercise, and health metrics with precision. It provides detailed insights into macronutrients, micronutrients, and other compounds, enabling users to make informed decisions about their health. The tool caters to individuals seeking to optimize their diets, manage weight, or track biometric data such as blood sugar levels and gut health. By integrating with various devices and apps, Cronometer addresses the challenge of maintaining accurate, consistent health data across multiple platforms. Its proprietary framework ensures data encryption and security, making it a trusted companion for users prioritizing privacy and accuracy in their health journey.

How it works

Cronometer is a web-based tool that combines detailed nutrition tracking with health data synchronization. It leverages lab-analyzed nutrient databases to provide users with accurate information on foods, supplements, and health metrics. The platform's primary purpose is to individuals to refine their diets by identifying nutrient gaps and aligning intake with health goals. By integrating with wearable devices and health apps, Cronometer offers a holistic view of user health. It supports tracking of up to 95 nutrients, including vitamins, minerals, and compounds like caffeine and alcohol, making it suitable for users with specific dietary needs or health conditions. Cronometer enables users to log meals, track nutrient intake, and set personalized dietary targets. Its built-in nutritional target wizard helps users define goals for macronutrients and micronutrients. The tool also syncs with devices to monitor biometrics such as pain symptoms, blood sugar levels, and gut health indicators, providing a comprehensive health overview.

How to use it

  1. 1Create an account and set dietary goals using the target wizard. 2. Log meals or supplements by searching for foods in the database or uploading recipes. 3. Sync data with compatible devices or apps to track biometrics. 4. Review reports to analyze nutrient intake and adjust habits accordingly. Practical tips include using the 'Dial up your diet' feature to identify nutrient deficiencies, leveraging integrations for data flow, and regularly auditing logs for accuracy.

What it can do

  • nutrition tracker

Use cases

Assumptions and limitations

Assumptions

  • source: https://cronometer.com/
  • license: Proprietary — free to use
  • privacy: Opens an external demo

Limitations

  • Proprietary licensing restricts open-source customization options
  • Limited free-tier features may require premium subscription for advanced analytics
  • No local data storage options for offline use
  • Integration limitations with non-partnered health devices
  • Manual entry of complex meals may lead to data entry errors

Understanding the result

Track calories, micronutrients, and health metrics precisely.

Tool details

  • Clearly flagged when a network request is needed.
  • No account, no sign-up, and no tracking of your content.
  • Powered by (MIT).
Built with
(https://cronometer.com/)
License
MIT
Runs locally
No — requires a network request
Verification
Not yet verified
Input
Query
Output
Text
Open-source source & license

Built with https://cronometer.com/. OpenToolVault provides the discovery and browser interface while crediting the original project maintainers.

Built with
License
MIT
View source on GitHub

Open-source project

OpenToolVault is an independent directory. We are not affiliated with or endorsed by this project.

References

Frequently asked

What is Cronometer and how does it differ from other nutrition apps?

Cronometer is a nutrition tracking tool that emphasizes scientific accuracy by using lab-analyzed nutrient databases. Unlike many apps that focus solely on calories and macros, it tracks up to 95 nutrients, including vitamins, minerals, and compounds. Its integration with biometric data from wearables sets it apart from simpler calorie counters. The platform's proprietary security framework also prioritizes data encryption and access controls, distinguishing it from open-source alternatives.

How does Cronometer ensure the accuracy of its nutritional data?

Cronometer sources its data from peer-reviewed studies and lab-analyzed food databases, ensuring nutrient values are verified by scientific standards. The platform regularly updates its database to reflect new research. While it does not disclose specific data sources, its emphasis on third-party verification and transparency in nutrient tracking distinguishes it from apps relying on estimated or outdated information.

How do I log a meal or supplement in Cronometer?

To log a meal, navigate to the 'Log' section and search for foods using keywords like ingredients or brands. Select pre-measured portions or input custom quantities. For supplements, use the 'Supplements' tab to add products with their nutrient profiles. Alternatively, use integrations with compatible apps to automatically sync meal data from smartwatches or fitness trackers.

How does Cronometer compare to alternatives like MyFitnessPal or Fitbit?

Cronometer focuses on micronutrient tracking with detailed data on 95+ nutrients, while MyFitnessPal prioritizes calorie and macro tracking. Fitbit emphasizes activity and sleep data rather than comprehensive nutrition. Cronometer integrates with wearables for biometric tracking, whereas Fitbit's nutrition features are more limited. MyFitnessPal offers a larger food database but lacks Cronometer's depth in micronutrient analysis.

What should I do if my data isn't syncing with my device?

First, verify that your device is properly connected to the Cronometer app and that permissions are granted for data access. Check the 'Integrations' section for troubleshooting guides. If issues persist, ensure both the app and device are updated to the latest versions. Contact support with error logs if synchronization fails after these steps.

Spotted something wrong with Cronometer, or want to maintain it? See how to help.