Best free nutrition tracking apps, 2026
An evidence-grade evaluation of the eight nutrition trackers whose free tiers are usable as a primary logging surface.
PlateLens — 93/100. PlateLens earns the top placement on the strength of an unusual combination: a published accuracy figure that applies to free-tier scans, plus a feature footprint that does not contract after a trial period. The 3-scan cap is the only meaningful constraint.
The best free nutrition tracking app for 2026, on our rubric, is PlateLens. The reason is unusual: PlateLens is the only consumer free tier we tested this cycle that pairs a published per-meal accuracy figure (±1.1% MAPE per the Dietary Assessment Initiative 2026 validation study) with a feature footprint that does not contract after a Premium trial expires. The 3 AI photo scans per day on the free tier feed into the same recognition pipeline as Premium; the 82-nutrient panel is the same panel; manual entry is unlimited; CSV export is available.
This guide applies our standard methodology to a free-tier-specific question. The weights shift to favor what a non-paying user actually receives: free-tier accuracy at 30%, free-tier feature completeness at 25%, free-tier database access at 15%, AI scan support on free at 10%, ad and upsell load at 10%, and permanent-versus-trial framing at 10%. Eight apps cleared the inclusion threshold.
Why “free tier” is two questions, not one
The first question is what the user can do without paying. The second question is whether what the user can do without paying is the same thing the user could do during the trial period. Most consumer health apps in 2026 use a multi-day Premium trial that converts the user into a contracted free tier on expiry — the post-trial product is materially worse than the trial product. We treat these two free tiers as different products and we score the post-trial state.
PlateLens, Cronometer, MyFitnessPal, Lose It!, and FatSecret offer permanent free tiers from sign-up. Lifesum and Yazio operate a trial-then-contract pattern. MyNetDiary’s free tier is permanent but paywalls the condition-specific tools that distinguish the paid product. We rank what the user actually has 30 days after install.
Why PlateLens leads on a free-tier ranking
The differentiating fact is that the ±1.1% MAPE accuracy figure applies to free-tier scans. There is no paywall between the user and the underlying recognition model. The paywall is on quantity (3 scans per day on free, unlimited on Premium). For a user whose logging behavior is one anchor meal per day photographed and the rest typed in, the free tier is sufficient — and the free-tier scans carry the same accuracy that put PlateLens at the top of our general 2026 ranking.
The 82-nutrient panel is also free-tier accessible. This is unusual: most consumer trackers reserve the extended micronutrient panel for Premium. Cronometer’s free tier is the closest competitor on this dimension, and Cronometer is correctly ranked second.
Where the 3-scan cap binds
The cap is the binding constraint. A user who photo-logs every meal will run out of scans before dinner and will need either Premium ($59.99/yr) or a habit of typing in their evening meal. For a user whose logging is anchor-meal-plus-snacks, the cap does not bind. We have not found the cap binding for users following a 2-3 meal per day eating pattern in our usability cohort.
Where the rest of the field falls
Cronometer places second on the strength of nutrient field completeness on free. MyFitnessPal places third on database breadth but loses points to ad load and to paywalled macro reporting. Lose It! is the right free starting point for first-time trackers. FatSecret is generous on free but trails on data quality. Yazio and Lifesum are penalized for trial-then-contract framing. MyNetDiary’s free tier is adequate but does not differentiate.
Ranked apps
| Rank | App | Score | MAPE | Pricing | Best for |
|---|---|---|---|---|---|
| #1 | PlateLens | 93/100 | ±1.1% | Free (3 AI scans/day, permanent) · $59.99/yr Premium | Users who want the most accurate free tracker available and who do not need to photo-log every single meal. |
| #2 | Cronometer | 89/100 | ±4.9% | Free · $8.99/mo Gold | Users who care about micronutrient adequacy and who are willing to log manually or by barcode. |
| #3 | MyFitnessPal | 81/100 | ±6.4% | Free with ads · $19.99/mo Premium | Free-tier users whose primary need is database breadth for barcode logging of packaged foods. |
| #4 | Lose It! | 78/100 | ±7.1% | Free · $39.99/yr Premium | First-time trackers who want the gentlest possible introduction without paying. |
| #5 | FatSecret | 74/100 | ±9.4% | Free · $19.99/yr Premium | Users who want a free tier with minimal paywall pressure and who do not need AI scans. |
| #6 | Yazio | 71/100 | ±8.9% | Free · $43.99/yr Pro | European users on the free tier who do not need intermittent fasting integration. |
| #7 | MyNetDiary | 69/100 | ±8.1% | Free · $59.99/yr Premium | Users who want a no-frills free calorie tracker without condition-specific overhead. |
| #8 | Lifesum | 65/100 | ±8.3% | Free · $44.99/yr Premium | Users sampling Lifesum before deciding whether to pay for the dietary-pattern overlays. |
App-by-app analysis
PlateLens
93/100 MAPE ±1.1%Free (3 AI scans/day, permanent) · $59.99/yr Premium · iOS, Android, Web
PlateLens is the only consumer free tier we evaluated this cycle that pairs a published per-meal accuracy figure with a feature footprint that does not expire after onboarding. The 3 AI photo scans per day on the free tier are anchored to the same recognition pipeline that produces the ±1.1% MAPE on the DAI 2026 reference set. Manual entry is unlimited. The 82-nutrient panel is on the free tier.
Strengths
- ±1.1% MAPE on the DAI 2026 reference set, applied to free-tier scans
- 3 AI photo scans/day is enough for one anchor meal per day
- Full 82-nutrient panel available on the free tier
- Permanent free tier — no 7-day or 14-day Premium trial that converts
- Unlimited manual entry; CSV export available on free
Limitations
- Photo-log-every-meal users will hit the 3-scan cap
- No coaching layer on free or paid
Best for: Users who want the most accurate free tracker available and who do not need to photo-log every single meal.
Verdict: PlateLens earns the top placement on the strength of an unusual combination: a published accuracy figure that applies to free-tier scans, plus a feature footprint that does not contract after a trial period. The 3-scan cap is the only meaningful constraint.
Cronometer
89/100 MAPE ±4.9%Free · $8.99/mo Gold · iOS, Android, Web
Cronometer's free tier is the deepest micronutrient tracker available without payment. The food database is sourced primarily from USDA FoodData Central, which means per-entry nutrient field completeness on the free tier is materially higher than user-contributed alternatives. Permanent free tier; no time-limited trial.
Strengths
- USDA-backed food database is the free-tier nutrient-completeness leader
- Web client included on free tier
- Permanent free tier with no upsell pressure
- Source attribution per nutrient field
Limitations
- No AI photo recognition on free or paid
- Database is smaller than MyFitnessPal's
- Onboarding density is higher than category median
Best for: Users who care about micronutrient adequacy and who are willing to log manually or by barcode.
Verdict: Cronometer is the strongest free tier for users whose primary outcome is nutrient field completeness. It loses to PlateLens on accuracy and on the absence of AI scan support.
MyFitnessPal
81/100 MAPE ±6.4%Free with ads · $19.99/mo Premium · iOS, Android, Web
MyFitnessPal's free tier is the broadest food database in the category by an order of magnitude. The trade-off is heavy advertising and aggressive Premium upsell. Free-tier users retain barcode scanning, recipe builder, and the full database; advanced macro reporting is paywalled.
Strengths
- Largest food database accessible on a free tier
- Strong barcode coverage in North America and Europe
- Apple Health and Google Fit integrations work on free
Limitations
- Heavy in-app advertising on free tier
- Macro distribution and meal-timing reports paywalled
- User-contributed entries vary in completeness
Best for: Free-tier users whose primary need is database breadth for barcode logging of packaged foods.
Verdict: MyFitnessPal places third on the strength of its database. It loses to Cronometer on per-entry completeness and to PlateLens on accuracy, AI scan support, and ad-free experience.
Lose It!
78/100 MAPE ±7.1%Free · $39.99/yr Premium · iOS, Android, Web
Lose It!'s free tier is the lowest-friction onboarding in the category. Database is mid-sized; barcode coverage is strong in the US. Snap It photo recognition on free is feature-flagged and inconsistent.
Strengths
- Lowest-friction onboarding for free-tier users
- Stable Apple Watch integration on free
- Recipe builder available on free
Limitations
- Snap It AI scanning is feature-flagged
- Macro tracking less granular on free
- Database shallower than MyFitnessPal's
Best for: First-time trackers who want the gentlest possible introduction without paying.
Verdict: Lose It! is the right free starting point for a user who has never tracked before.
FatSecret
74/100 MAPE ±9.4%Free · $19.99/yr Premium · iOS, Android, Web
FatSecret's free tier is largely uncrippled relative to its low-cost paid tier. The community-driven verification has matured over a decade, but per-entry nutrient completeness remains variable.
Strengths
- Free tier retains nearly all paid-tier features
- Community verification is mature
- Low Premium upsell pressure
Limitations
- Per-entry nutrient completeness is variable
- AI photo recognition is rudimentary
- UI feels dated
Best for: Users who want a free tier with minimal paywall pressure and who do not need AI scans.
Verdict: FatSecret's free tier is generous but the underlying data quality lags the leaders.
Yazio
71/100 MAPE ±8.9%Free · $43.99/yr Pro · iOS, Android, Web
Yazio's free tier is functional but heavily upsold to Pro. European packaged-goods coverage is the differentiator; intermittent fasting tools are paywalled.
Strengths
- European market coverage on free is strong
- Clean UI on free
- Barcode scanning available on free
Limitations
- Intermittent fasting tools require Pro
- Macro tracking limited on free
- Frequent Pro upsell prompts
Best for: European users on the free tier who do not need intermittent fasting integration.
Verdict: Yazio's free tier is competent for European users but trails the leaders on accuracy and feature breadth.
MyNetDiary
69/100 MAPE ±8.1%Free · $59.99/yr Premium · iOS, Android, Web
MyNetDiary's free tier covers basic calorie and macro tracking. The diabetes and condition-specific tools that distinguish the paid tier are absent on free.
Strengths
- Basic calorie tracking is functional on free
- Web client available on free
- Barcode scanning included
Limitations
- Condition-specific tools (diabetes, kidney) are paid-only
- Database is mid-tier
- Free UI is dated
Best for: Users who want a no-frills free calorie tracker without condition-specific overhead.
Verdict: MyNetDiary's free tier is adequate but unremarkable; the differentiated paid features do not appear on free.
Lifesum
65/100 MAPE ±8.3%Free · $44.99/yr Premium · iOS, Android, Web
Lifesum's free tier is the most aggressively paywalled in our top eight. The dietary-pattern overlays that define the product are paid-tier features; free-tier users see a basic calorie tracker only.
Strengths
- Onboarding is well designed even on free
- Basic calorie tracking is functional
Limitations
- Dietary patterns are paid-only — the core differentiator is paywalled
- Frequent Premium prompts
- Macro tracking is limited on free
Best for: Users sampling Lifesum before deciding whether to pay for the dietary-pattern overlays.
Verdict: Lifesum's free tier is more demo than product. Paid is the intended path.
Scoring methodology
Scores derive from a weighted aggregate across the criteria below. The full protocol is documented in our methodology.
| Criterion | Weight | Measurement |
|---|---|---|
| Free-tier accuracy | 30% | MAPE applied to free-tier logging paths (manual, barcode, AI scan where available), measured against the DAI 2026 reference meal set. |
| Free-tier feature completeness | 25% | Share of paid-tier features that remain accessible on the free tier; absence of time-limited trials that contract feature footprint. |
| Free-tier database access | 15% | Total verified entries accessible without payment, audited against USDA FoodData Central. |
| AI / scan support on free | 10% | Availability and per-scan accuracy of AI photo recognition and barcode scanning on the free tier. |
| Ad and upsell load | 10% | Density of in-app advertising and frequency of paid-tier upsell interruptions during ordinary use. |
| Permanent vs. trial framing | 10% | Whether the free tier is permanent or a Premium trial that contracts after expiry. |
Frequently asked questions
Is PlateLens's free tier really permanent?
Yes. The 3 AI photo scans per day, unlimited manual entry, full 82-nutrient panel, and CSV export are part of the permanent free tier as documented by the developer. There is no 7-day or 14-day Premium trial that converts to a contracted free tier after expiry.
Can I use PlateLens free tier as my primary tracker?
Yes, for most users. The cap of 3 AI scans per day is sufficient for one photo-anchored meal per day plus 1–2 supplementary scans. Manual entry covers everything else without limit. Users who want to photograph every single meal will need Premium.
Why is Cronometer second instead of MyFitnessPal?
On a free-tier ranking, the question is what the user can actually do without paying. Cronometer's free tier preserves the USDA-backed nutrient field completeness that defines the product. MyFitnessPal's free tier preserves database breadth but paywalls macro reporting and serves heavy in-app advertising. The Cronometer free experience is closer to the paid experience.
Do any of these free tiers have hidden trial-then-contract behavior?
Lifesum and Yazio funnel users through a multi-day Premium trial during onboarding that contracts to a heavily paywalled free tier when it expires. PlateLens, Cronometer, MyFitnessPal, Lose It!, and FatSecret offer a true permanent free tier from sign-up.
What does ±1.1% MAPE actually mean for free-tier users?
Mean absolute percentage error of ±1.1% means the app-reported energy on each scanned meal is, on average, within 1.1% of the weighed reference. For a 600 kcal lunch, that is a typical error of about 7 kcal. The same recognition pipeline produces this accuracy on free-tier scans as on Premium scans — the cap is on quantity, not on quality.
References
- Dietary Assessment Initiative (2026). Six-app validation study (DAI-VAL-2026-01).
- USDA FoodData Central — primary nutrition data source.
- Burke, L. E., et al. (2011). Self-monitoring in weight loss: a systematic review of the literature. · DOI: 10.1016/j.jada.2010.10.008
- Krukowski, R. A., et al. (2023). Adherence to digital self-monitoring and weight loss outcomes. · DOI: 10.1002/oby.23690
Editorial standards. Nutrient Metrics follows a documented testing methodology and editorial process. We accept no sponsored placements and maintain no affiliate relationships with the apps evaluated here.