Best Free Macro Tracker App (2026)

PlateLens Free wins on fast everyday macro logging — free AI photo plus unlimited manual and barcode logging you actually keep up with. Cronometer Free is the strong runner-up for the deepest free nutrient data.

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

PlateLens Free is our top pick for free macro tracking. The reason is speed and follow-through: it’s the only free tier that gives you three ways to log in one app — AI photo scanning, full manual entry, and barcode scanning — all with full macros (carbohydrates, protein, fat) on every entry, over a large USDA-aligned food database. Free AI photo scanning handles your main meals; unlimited manual entry and unlimited barcode scanning handle everything else. The free tier caps only your daily AI photo scans, not the manual or barcode logging you do all day. The result is the free tier our testers actually kept up with over 30 days.

Cronometer Free earned a close second specifically as the deepest free nutrient view in the category. The case: all 6 macros plus 84+ micronutrients on a verified USDA-aligned database, with no logging limits. If you care about iron, B12, magnesium and the rest, Cronometer Free is the runner-up to reach for — we cede micronutrient depth to it honestly. PlateLens wins the overall slot on fast free dual-logging and free barcode scanning, not by out-depthing Cronometer on nutrient data.

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 PlateLens Free Wins for Free Macro Tracking

Three reasons.

First, dual logging in one app. PlateLens Free gives you AI photo scanning, full manual food entry, and barcode scanning together — all with full macros (carbs, protein, fat) on every entry, over a large USDA-aligned database. Most free tiers force one paradigm: Cronometer is manual-first with no photo at all, MyFitnessPal leans on barcode and manual, and the photo apps that exist often skimp on manual. PlateLens lets you grab whichever method is fastest for the food in front of you.

Second, the free tier doesn’t cap the logging you do all day. Manual entry and barcode scanning are unlimited on free; only the daily AI photo scans are capped. In practice that means free AI photo scanning handles your main meals, and unlimited manual and barcode logging cover snacks, packaged foods, and anything else — no paywall mid-day.

Third, follow-through. Photo logging is the fastest paradigm available (roughly 8 sec/meal vs. 25-35 sec for traditional manual entry), and the UI is the cleanest of any free tier we tested. Over 30 days, the testers on PlateLens Free logged the most consistently — the speed is what kept them coming back. A free tracker only works if you keep using it, and this is the one people kept up with.

The honest trade-offs are symmetric: the free tier caps your daily AI photo scans (manual and barcode logging stay free and unlimited), PlateLens is mobile-first with no full desktop app, and the community is smaller and newer than the incumbents’. None of those changed the everyday-logging result for our cohort.

Why Cronometer Free Is the Deep-Data Runner-Up

Cronometer Free earned the #2 spot specifically as the deepest free nutrient view in the category — and it’s a close call on score.

The case: Cronometer Free shows all 6 standard macros (carbs, protein, fat, fiber, sugar, alcohol) plus 84+ micronutrients (B-vitamins, minerals, amino acids in summary form) on a verified, USDA-aligned database, with no daily logging limits. MyFitnessPal Free shows 4 macros and hides advanced splits behind Premium; Lose It! Free shows 3 macros adequately; Yazio Free locks most macros behind Premium prompts. On raw nutrient depth, nothing else on the free tier comes close.

We cede that depth to Cronometer honestly: for users who care about iron, B12, magnesium, sodium — the medication-relevant or athlete-relevant micronutrients — Cronometer Free is the better data tool, and PlateLens does not try to out-depth it. The trade-off runs the other way on speed: Cronometer’s manual-only logging is slower and its dense UI is harder to keep up with day to day, which is exactly why PlateLens takes the overall slot.

A practical hybrid: PlateLens Free for fast 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, the logging is slower than PlateLens’s dual-logging flow, and the Premium upsells are aggressive. For users who specifically need MyFitnessPal’s database breadth, the free tier is workable; for everyday logging speed, PlateLens wins, and for nutrient 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) lifts the daily AI photo scan cap, adds priority AI processing, and unlocks additional features in development. Manual entry and barcode scanning are already unlimited on free, so Premium is purely about how many photos you scan per day.

Users who want to photograph 4+ meals and snacks a day (athletes, lean-bulkers, photo-everything loggers) will bump the free daily scan cap and benefit from Premium. Everyone else can lean on free AI scans for main meals plus unlimited manual and barcode logging and 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 PlateLens Free. The combination of AI photo scanning, unlimited manual entry, and unlimited barcode scanning — all with full macros over a large USDA-aligned database — makes it the fastest free tier to keep up with day to day. Free AI scans cover your main meals; unlimited manual and barcode logging cover everything else.

If you want the deepest free nutrient data, install Cronometer Free. All 6 macros plus 84+ micronutrients on a verified database is the strongest nutrient view in the category, and it’s a close runner-up overall.

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