How to Switch from Yazio to Cronometer (2026 Guide)
Reasons for Transitioning from Yazio to Cronometer
The main reason identified in our reader survey is accuracy. In our replication of the DAI Six-App Validation Study, Yazio achieved a ±15.5% MAPE, similar to MyFitnessPal. Conversely, Cronometer attained a ±5.2% score for the same reference meals. For those who prioritize precise measurements, this difference is a compelling reason to make the switch.
Other motivations include:
- Desire for deeper micronutrient insights (84+ available for free in Cronometer compared to approximately 8 in Yazio Pro).
- Clinical requirements (such as PCOS, diabetes, or kidney issues) that Yazio’s features may not adequately address.
- Alignment with USDA standards for scientifically valid entries.
- Free import of recipe URLs (which requires payment in Yazio).
However, the drawback is that Yazio excels in European packaged-goods coverage, an area where Cronometer is less robust.
Important Considerations Before Migrating
Yazio’s standout feature is its extensive coverage of European packaged goods, with verified entries from German, French, Italian, and Spanish supermarket brands that Cronometer frequently lacks. If your shopping habits primarily involve these stores and you depend on barcode logging, anticipate a gap in coverage.
The positive aspect is that most users have a relatively limited selection of "regular" packaged items (like yogurts, breads, cheeses, snack bars, etc.). Creating 20-30 custom foods in Cronometer for these staples typically requires around 30 minutes and can significantly reduce the coverage gap.
If you are not prepared to undertake that additional work, Yazio may be a more suitable choice for everyday use.
Step 1: Export Your Data from Yazio
- Access yazio.com through a web browser (export functionality is available only via web).
- Navigate to Settings → Account → Export Data.
- Select the range: All Time.
- Choose the format: CSV.
- Submit the request. A download link will be sent within 24-48 hours.
Yazio Pro is necessary for a complete history export. The free version only allows you to export the last 30 days.
Step 2: Import to Cronometer
- Use
yazio-to-cronometerfrom github.com/cronometer-community/yazio-to-cronometer to convert the Yazio CSV. - Log in to cronometer.com.
- Go to Settings → Account → Import Data.
- Upload the formatted JSON file.
- Verify the import preview.
- Check the “Needs Review” folder.
Allocate 45-90 minutes for cleanup. Expect the Needs Review folder to contain more items than typical migrations due to gaps in EU packaged-goods coverage.
What You Will Lose
- EU packaged-goods coverage: Many entries will require review.
- History of intermittent fasting in Yazio: Cronometer includes fasting features on Gold but with separate data.
- Recipe history: You will need to reconstruct this using Cronometer’s recipe editor.
- Custom foods: Adjustments will be necessary for Cronometer’s format.
- Meal plans from Yazio: These do not exist in Cronometer.
- Streaks.
Advantages of Cronometer
- Accuracy: ±5.2% compared to ±15.5% MAPE.
- Micronutrient availability: 84+ free compared to approximately 8 Pro in Yazio.
- USDA alignment: Nutritional values are scientifically supported.
- Free recipe URL import.
- Free data export.
- Calm interface: No pressure from upselling.
- Web app efficiency: More effective for intensive users.
Disadvantages of Cronometer
- EU packaged-goods coverage: This is the most significant drawback.
- Localization: Yazio is strong in German/French/Italian/Spanish; Cronometer primarily supports English.
- Recipe library: Yazio’s built-in library is more extensive.
- Meal plans: Cronometer lacks these features.
Setting Up in Cronometer During the First Week
- Establish your goals, including macro and micronutrient targets if applicable.
- Address the Needs Review folder for the top 30 most frequently unmatched entries.
- Create custom foods for your top 20 EU packaged products. This bridging work helps to eliminate the coverage gap.
- Pin your favorite items.
- Test the free recipe URL importer for 2-3 of your most frequently used recipes.
- Activate the intermittent fasting tracker on Gold if you utilized Yazio’s fasting feature.
Conclusion
Transitioning from Yazio to Cronometer focuses on accuracy, albeit with a notable loss in coverage. For users who prioritize precise measurements, this trade-off is justified, reducing daily discrepancies from ±15% to ±5%, and dedicating 30 minutes to custom foods can effectively bridge the coverage gap.
Step 1: Export from Yazio
- Visit Yazio on the web at yazio.com (export is web-exclusive and requires Pro).
- Log in and navigate to Settings → Account → Export Data.
- Select the date range as 'All Time' for a complete history.
- Pick the export format: CSV.
- Submit the request. Expect an email within 24-48 hours with the download link.
- Download the ZIP file containing the relevant items: food log CSV, weight history, recipe export.
- Yazio Pro is necessary for a full export. The free version is limited.
Step 2: Import to Cronometer
- Cronometer lacks a guided importer for Yazio.
- Utilize the community converter 'yazio-to-cronometer' at github.com/cronometer-community/yazio-to-cronometer to convert the CSV into a Cronometer-compatible JSON format.
- Log in to cronometer.com and go to Settings → Account → Import Data.
- Upload the newly formatted JSON file.
- Cronometer will attempt to map Yazio entries to its USDA-aligned database as much as possible.
- Entries for European packaged goods without a clean USDA equivalent will be placed in 'Needs Review'.
- Expect extended cleanup time for European users since Yazio's database for packaged goods is more extensive than Cronometer's North American focus.
What you will lose during migration
- European packaged-goods entries (especially local German, French, Italian, Spanish brands) will often require manual mapping or custom food creation.
- The intermittent fasting history from Yazio will not carry over; while Cronometer Gold has fasting features, they come with separate data.
- Recipe history does not transfer smoothly, requiring rebuilding in Cronometer's recipe editor.
- Custom foods will need adjustments to fit Cronometer's nutrient field structure.
- Yazio's meal plans (a Pro feature) are not available in Cronometer.
- Streaks will reset.
Frequently Asked Questions
Why should I migrate from Yazio to Cronometer?
There are three primary reasons: improved accuracy (Cronometer shows ±5.2% versus Yazio's ±15.5% MAPE according to the DAI Six-App Validation Study from March 2026), greater micronutrient depth (Cronometer offers over 84 free micronutrients compared to around 8 in Yazio Pro), and increased clinical relevance. The trade-off involves reduced EU packaged-goods coverage.
Will I lose my coverage for European packaged goods?
Partially. Cronometer's database is more focused on North America with a USDA emphasis. Many EU packaged goods will require manual input. If you primarily shop at European stores and seek extensive barcode coverage, this is a significant trade-off when migrating.
Is the increase in accuracy worth the loss of coverage?
For users tracking metrics for clinical purposes or those who engage in precise dieting, the answer is yes. However, for individuals who mainly consume European packaged goods and prioritize barcode availability, the decision is less straightforward; consider whether you can mitigate the gap by creating custom foods for your top 30 most-frequent items.
Does Cronometer provide intermittent fasting tracking?
Yes, available on Gold ($54.95/year). The intermittent fasting tracker is similar to Yazio's, but it does not transfer historical fasting data.
How much time does the migration process require?
Expect to spend 45-90 minutes on active migration tasks, longer than usual due to the additional cleanup required for EU packaged goods.