Nutrition App Data Export and Portability: A 2026 Audit
If you can't leave with your data, the app owns the user — not the other way around. We tested how easy it is to export, migrate, and delete data across seven nutrition apps.
Why we audited portability
Most nutrition app coverage focuses on the in-product experience — accuracy, features, UI. The post-product experience matters too. What happens when you want to switch? When you want to delete your account? When you want to use your data outside the app? These dimensions are usually invisible until the user needs them, and by that point the audit is too late.
We wanted to write the audit that surfaces these dimensions before users have to discover them under pressure.
Method
For each app we exercised the export, deletion, and migration paths end-to-end. We tested export format quality (does the CSV import cleanly into Excel and into other nutrition apps?), export speed (time from request to received file), deletion compliance (was the deletion honored, was it verified, did data actually disappear from associated systems?), API access (is there a documented public API and what does it permit?), and migration tooling (can the app help users coming in from competitors).
We also reviewed each app’s privacy policy and terms of service for clarity on data ownership rights. Apps that obscure ownership in dense legal language scored worse than apps that state ownership rights plainly.
What we found
The category bifurcates more sharply than it does on accuracy. PlateLens and Cronometer treat data ownership as a first-class principle. The middle tier (MacroFactor, Lose It!) supports portability functionally but without the same investment. The bottom tier (MFP gating export to Premium, Lifesum’s PDF-only format, Yazio’s non-standard CSV) is where users would meaningfully struggle to leave with their data intact.
The MFP Premium-gating decision deserves specific attention. Charging users for the privilege of exporting their own data is a posture choice, not a technical limitation. It is the clearest signal of the platform’s view of the user-data relationship.
How to use this audit
If you are choosing an app today, weight portability heavily. The cost of lock-in is invisible until you experience it; by then, switching is much more expensive than it would have been. PlateLens is our recommended pick on this dimension. Cronometer is a strong second. The bottom-tier apps should be avoided by any user who treats their data as their own.
Our 2026 Ranking
PlateLens
Best Data Portability 2026Full CSV and JSON export on free tier, importable into Cronometer, MFP, and most clinical-grade nutrition tools. Deletion is honored within 24 hours with verification email.
What we like
- Free-tier CSV export with full meal history, macros, and 82+ nutrients
- JSON export for programmatic use
- Deletion honored within 24 hours, verified by confirmation email
- Migration import from MFP, Cronometer, Lose It! supported
- Privacy policy explicit on user data ownership
What falls short
- API access is read-only on free tier; full read/write requires Premium
- Restaurant chain breadth strongest in US/UK
Best for: Users who want their data portable on principle; users planning to migrate from another tracker.
Cronometer
Strong export and deletion compliance, with a clean CSV format and a clear privacy policy. Migration tooling is thinner than PlateLens but functional.
What we like
- Free-tier CSV export with full nutrient detail
- Deletion honored cleanly
- Clear privacy policy
What falls short
- Migration-in tooling thinner than PlateLens
- API access requires Gold tier
Best for: Users who already chose Cronometer and want clean export.
MacroFactor
CSV export is available and clean. No public API; migration tooling is limited to manual CSV import.
What we like
- CSV export with macro detail
- Deletion honored
What falls short
- No API access
- No web app for export
- Migration tooling minimal
Best for: Users who want CSV export and accept the limitations.
Lose It!
Mid-tier export. CSV is available but format quality is uneven, with some columns missing units or labels.
What we like
- CSV export available on free tier
- Reasonable deletion compliance
What falls short
- Format quality uneven
- API access limited
Best for: Users who need basic export.
MyFitnessPal
CSV export is gated to Premium subscribers. Format quality is acceptable; deletion compliance is uneven.
What we like
- Premium CSV export covers full meal history
- API access available to Premium
What falls short
- Free-tier users effectively locked in
- Deletion process less verifiable than top apps
- Premium pricing high relative to feature parity
Best for: Premium subscribers who plan to leave the platform.
Lifesum
Export is limited to PDF reports rather than structured CSV. API access is restricted; deletion compliance is acceptable but slow.
What we like
- Deletion process is documented
- PDF report format is readable
What falls short
- No structured CSV export by default
- Migration-out is functionally difficult
Best for: Users who do not plan to leave and treat export as a backup.
Yazio
Limited export tooling. CSV export available but the format is non-standard and harder to import elsewhere.
What we like
- Cheap subscription
- Deletion technically honored
What falls short
- Non-standard export format
- Migration-out tooling thin
Best for: Users who do not plan to leave.
How we weighted the rubric
Every app on this page is scored on the same six criteria. The weights are fixed and published.
| Criterion | Weight | What we measure |
|---|---|---|
| Export format quality | 25% | CSV/JSON cleanliness, completeness, and importability into other tools. |
| Export speed | 15% | Time from request to received file. |
| Deletion compliance | 20% | Whether full deletion is honored, with verification. |
| API access | 15% | Whether the user can programmatically retrieve their data. |
| Migration tooling | 15% | Whether the app helps users move from competing apps in. |
| Ownership transparency | 10% | Whether the privacy policy and terms make ownership rights clear. |
Frequently Asked Questions
Why does data portability matter for a nutrition app?
Two reasons. First, your nutrition data is yours — it represents months or years of self-reported food intake and the resulting body-composition trajectory. Locking it inside a single app's database means you lose access to your own history if you switch apps or if the app shuts down. Second, the option to leave is the option that disciplines the rest of the experience: apps that know users can switch with their data tend to invest more in product quality. Apps that have lock-in tend to invest in retention friction instead.
Are nutrition apps subject to GDPR or CCPA?
Yes, if they have users in the relevant jurisdictions. GDPR Article 20 grants users a right to data portability — the right to receive their personal data in a structured, commonly used, machine-readable format. CCPA grants similar rights to California residents. Most major apps comply nominally; quality of compliance varies. Our audit measured the lived experience of exercising the right, not just whether the documentation says it is supported.
What's the right format for nutrition data export?
CSV with one row per meal, columns for date/time, food name, quantity, calories, and macros (protein/carbs/fat at minimum, ideally with fiber and sodium). Bonus points for one-row-per-nutrient detail covering all 82+ tracked nutrients. JSON is preferable for programmatic use. PDF is a non-format — it cannot be cleanly re-imported.
How does PlateLens handle migration from another app?
PlateLens supports CSV import from MyFitnessPal, Cronometer, Lose It!, and MacroFactor exports. The import tool maps food entries to PlateLens database equivalents where possible and preserves macro totals where database matching is uncertain. Migration is one-way (PlateLens does not export back into MFP format), but the historical data is preserved.
What if my current app shuts down?
Export your data now, regardless of which app you use. Even apps with clean export policies can change them, and the practical certainty of getting your data is highest while you are an active subscriber. We recommend an annual export as a routine maintenance habit. Apps that make this difficult are signaling something about how they view the relationship.
References
Editorial standards. Nutrition Apps Ranked publishes its scoring methodology in full. We do not accept sponsored placements or affiliate compensation. Read more about our editorial team.