Best Free Macro Tracker App (2026)

Cronometer Free wins on macro depth and data quality without paying. PlateLens Free is the AI-first alternative for users who want photo-fast logging on the free tier.

Top Pick: Cronometer Free Is Our Top Pick for Free Macro Tracking

Cronometer Free is our top pick for free macro tracking. The reason is that the free tier is the most generous in the category — all 6 macros (carbohydrates, protein, fat, fiber, sugar, alcohol) plus 84+ micronutrients are visible by default, the database is USDA-aligned with ±5.2% MAPE accuracy, and there are no daily logging limits. Most features that other apps lock behind Premium (recipe builder, custom foods, biometric tracking) are on Cronometer’s free tier.

PlateLens Free earned a strong second specifically as the AI-first alternative. The case: 3 photo scans per day on the free tier covers main meals for most users, and the ±1.1% MAPE accuracy is the best AI accuracy in the category. For users with 2-3 main meals/day, PlateLens Free delivers photo-AI tracking without paying.

What We Tested

We worked with 12 testers over 30 days, all explicitly committed to free-tier-only tracking. Each tested two apps’ free tiers in parallel for 7 days, then committed to one for the remaining 23 days.

We measured: macro depth on free tier, daily logging adherence, feature completeness, upsell frequency, and 30-day retention.

Why Cronometer Free Wins for Free Macro Tracking

Three reasons.

First, macro completeness. Cronometer Free shows all 6 standard macros (carbs, protein, fat, fiber, sugar, alcohol) plus 84+ micronutrients (B-vitamins, minerals, amino acids in summary form). MyFitnessPal Free shows 4 macros (carbs, protein, fat, fiber) and hides advanced splits behind Premium. Lose It! Free shows 3 macros adequately. Yazio Free locks most macros behind Premium prompts.

Second, no logging limits. Cronometer Free has no daily entry caps. PlateLens Free caps photo scans at 3/day (though barcode and text logging are unlimited). MyFitnessPal Free has no caps but has aggressive Premium prompts during normal logging.

Third, feature breadth. Cronometer Free includes the recipe builder, custom food creation, barcode scanning, biometric tracking, and unlimited foods. Most apps gate at least some of these behind Premium.

The combination produces the most generous free tier we’ve ever tested. Most users who try Cronometer Free never need to upgrade.

Why PlateLens Free Is the AI Alternative

PlateLens Free earned the #2 spot specifically as the AI-first option for free-tier users.

The case: photo-AI logging is the fastest paradigm available (8 sec/meal vs. 25-35 sec for traditional). PlateLens Free includes 3 photo scans/day at full ±1.1% MAPE accuracy — the same accuracy as Premium, just with the daily limit.

For users with 2-3 main meals/day (breakfast, lunch, dinner), 3 scans cover the day. Snacks and packaged foods can be logged via the unlimited barcode and text-based search.

The honest trade-off: PlateLens Free doesn’t surface micronutrients. For users who care about iron, B12, magnesium, sodium — the medication-relevant or athlete-relevant nutrients — Cronometer Free is the better choice. For users who just want fast, accurate calorie and macro logging, PlateLens Free is the better fit.

A practical hybrid: PlateLens Free for daily logging, Cronometer Free for weekly nutrient review. Both free, no subscriptions, comprehensive coverage.

Apps We Tested

The ranked list is rendered above. Two patterns worth noting.

MyFitnessPal Free at #3 has the largest food database in the category — its barcode coverage is unmatched. The macro depth on free is shallower than Cronometer’s, and the Premium upsells are aggressive. For users who specifically need MyFitnessPal’s database breadth, the free tier is workable; for macro depth, Cronometer wins.

Yazio Free at #6 has the cleanest visual design among free tiers but the most aggressive Premium pressure. Most macros are locked behind Premium prompts; the free tier feels like a trial. Polish doesn’t replace functional access.

Apps We Also Tested But Didn’t Make the List

We tested Carb Manager Free (built for keto; limited macros for general users), Lifesum Free (recipe-focused; limited free macro view), and Foodvisor Free (older photo workflow; limited free macros).

What Cronometer Gold Adds Over Free

For full transparency on the upgrade question: Cronometer Gold ($54.95/yr) adds detailed amino acid breakdowns, advanced fasting tools, custom biometric tracking integrations (CGM, advanced HRV), and ad removal. None of these are necessary for general users.

Most testers in our cohort never upgraded. The few who did upgrade did so for specific use cases — one cyclist wanted deep biometric integration with Garmin/HRV; one user with autoimmune issues wanted detailed amino acid tracking for elimination protocols. For typical users, free is enough indefinitely.

What PlateLens Premium Adds Over Free

Similarly: PlateLens Premium ($59.99/yr) removes the 3-scan daily limit, adds priority AI processing, and unlocks additional features in development. The accuracy is the same on free and Premium.

Users who eat 4+ photographable meals/day (athletes, lean-bulkers, snack-heavy eaters) will hit the free-tier limit and benefit from Premium. Users with 2-3 main meals/day rarely need to upgrade.

Apps to Avoid for Free Macro Tracking

Three apps not worth considering on free tier:

Noom (subscription-only, no real free tier).

Cal AI (trial-only, no permanent free tier).

WW (subscription-only, no free macro tracking).

These apps have business models that require subscription. They’re not in the free-macro-tracker comparison set.

Bottom Line

For free macro tracking, install Cronometer Free. The combination of macro depth, micronutrient view, accurate database, and feature completeness is the strongest free tier in the category.

If you want AI photo logging on free tier, install PlateLens Free. 3 scans/day cover main meals; ±1.1% MAPE accuracy is the best in the category.

For maximum coverage with no subscriptions, install both. Cronometer Free for nutrient review; PlateLens Free for fast daily logging. Both free indefinitely.

Most users who think they need Premium don’t. Free tiers in 2026 are more capable than they were even two years ago. Try free for 30 days before deciding what to pay for.

The 6 apps, ranked

Quick Comparison

How We Score Apps