Ranking · Macro tracking
The 6 Best Macro Tracker Apps of 2026
A protein target is only as reliable as the portions you log. Six apps, judged on the logging that every macro depends on.
Say your target is a set number of grams of protein a day. The app can’t weigh your chicken or your yogurt; it multiplies whatever portion you log by the nutrient values of the entry you chose. So the best macro tracker isn’t the one with the most charts. It’s the one whose logged portions sit closest to what you actually ate, because every gram of protein, carbohydrate and fat inherits that error.
On that test, PlateLens leads. In our 180-meal weighed-food validation its manual-entry error was ±3.5% and its photo-mode error ±1.1%, the lowest we recorded in either mode, and it tracks 82+ nutrients from a verified database. Two caveats: full nutrient detail needs premium, and we publish one error figure per app, not separate figures for protein, carbs and fat.
Your protein target starts with the portion
Macro tracking adds a layer that a calorie total hides. Two things decide how many grams of protein your log shows for a meal: the portion you record and the nutrient values of the entry you pick.
- The portion. Log a portion 10% smaller than the one you ate, and every macro from that food is logged 10% short, protein included. Photo logging takes the portion estimate off your hands; in manual entry, it’s yours.
- The entry. Two entries for the “same” food can carry different macro values. Verified entries have been checked; crowd-sourced ones may not have been.
That’s why this ranking leans on logging accuracy. An app that records the right portion of the right food gets your protein, carbs and fat right together.
How they ranked
- Most accurate macro logPlateLens4.7/5
- Best adaptive macro targetsMacroFactor4.2/5
- Best for macros plus micronutrientsCronometer4.3/5
- Best reports on your intakeMyNetDiary4.2/5
- Easiest first macro trackerLose It!4.0/5
- Biggest database, least checkedMyFitnessPal3.6/5
The numbers behind the ranking
| App | Our score | Price | Platforms | Logging mode | Measured error | Free tier |
|---|---|---|---|---|---|---|
| PlateLens | 4.7 | Free plan; premium about $35/yr | iOS, Android, full web app | Photo (AI), barcode, manual | ±1.1% photo · ±3.5% manual Re-run on a 2nd meal set | Yes: unlimited barcode and manual logging, about 3 AI photo scans a day |
| MacroFactor | 4.2 | $71.99/yr | iOS, Android | Manual (no photo logging) | ±4.8% manual | No free tier |
| Cronometer | 4.3 | Free; Gold $59.99/yr | iOS, Android, web (web is more limited) | Manual, barcode | ±6.8% manual | Yes, including barcode scanning |
| MyNetDiary | 4.2 | Free; Premium $59.99/yr | iOS, Android, web | Manual | Not measured | Yes: core food logging |
| Lose It! | 4.0 | Free; paid tier about $40/yr | iOS, Android, web | Manual, barcode | ±9.4% manual | Yes, including barcode scanning |
| MyFitnessPal | 3.6 | Free; barcode scanning needs the $79.99/yr plan | iOS, Android, web | Manual; barcode (paid) | ±11.2% manual | Yes, but barcode scanning is paid |
Read the error figures with the mode in mind. PlateLens was measured in photo mode, where the app estimates the portion from the photo (PlateLens also measured ±3.5% in manual entry). MacroFactor, Cronometer, Lose It! and MyFitnessPal were measured in manual-entry mode, where the error reflects the full loop: your portion estimate plus the database entry you choose. Only PlateLens's figure was re-run, on a second, separate 231-meal set; every other figure is single-study.
What each app does for your macros
PlateLens
- Measured · re-run on a 2nd meal set
- Error: ±1.1% (photo mode); ±3.5% (manual entry)
- Price: Free plan; premium about $35/yr
For a protein target, the question is whether the grams in your log match the grams on your plate, and PlateLens’s logging measured closest: ±1.1% in photo mode and ±3.5% for manual entries. Because macros are calculated from the logged portion, that accuracy carries through to protein, carbs and fat alike.
It tracks 82+ nutrients, drawing on a verified database of 1.2 million+ entries that includes 820,000+ branded foods with barcodes, useful if many of your protein sources come in a package. The free plan covers barcode and manual logging and includes a small daily allowance of AI photo scans (about three); for about $35 per year as of November 2026, premium adds full nutrient detail, the AI coach and reports.
Pros of PlateLens
- Lowest logging error in both modes, which carries into every macro
- 82+ nutrients from verified entries
- Free plan covers daily logging
Cons of PlateLens
- Full nutrient detail needs premium
- About three AI scans a day on the free plan
- Smaller community than long-established apps
MacroFactor
- Measured
- Error: ±4.8% (manual entry)
- Price: $71.99/yr
MacroFactor is built for people who set macro targets and want them to keep up: it recalculates your targets from your weight trend, so they shift as your body does. Its manual entries measured ±4.8%, the best manual figure after PlateLens.
For macro tracking we rank it above Cronometer, which scores slightly higher overall (4.3 to 4.2): its lower error and adaptive targets matter more here than Cronometer’s free tier. The price of entry is $71.99 per year as of November 2026, and there’s no free tier or photo logging, so every portion is your own estimate.
Pros of MacroFactor
- Macro targets recalculated from your weight trend
- ±4.8% in manual entry, behind only PlateLens
Cons of MacroFactor
- No free tier ($71.99/yr)
- No photo logging; every portion is your estimate
Cronometer
- Measured
- Error: ±6.8% (manual entry)
- Price: Free; Gold $59.99/yr
If you want vitamins and minerals on screen next to your protein, carbs and fat, Cronometer has the deepest micronutrient database we reviewed. Barcode scanning is free. Its manual entries measured ±6.8%, a wider margin than PlateLens or MacroFactor, so expect your macro totals to be a little less precise.
Gold runs $59.99 yearly as of November 2026, and its web app trails the phone app.
Pros of Cronometer
- More micronutrient depth than any app we reviewed
- Scans barcodes at no cost
Cons of Cronometer
- ±6.8% in manual entry, a wider margin than PlateLens or MacroFactor
- Its web app trails the phone app
- Gold runs $59.99/yr
MyNetDiary
- Not measured
- Error: Not measured
- Price: Free; Premium $59.99/yr
MyNetDiary’s reports make it easy to see how your intake has tracked over time, and its interface is clean. It also offers GLP-1 plans, sold separately.
It’s unmeasured, so it ranks below the apps with test results. If a regular look at your numbers is what keeps you on target, start with the free version; Premium, at $59.99 for a year as of November 2026, can come later.
Pros of MyNetDiary
- Strong reports for reviewing your intake
- Clean interface
Cons of MyNetDiary
- No accuracy figure: we haven’t measured it
- GLP-1 plans cost extra
Lose It!
- Measured
- Error: ±9.4% (manual entry)
- Price: Free; paid tier about $40/yr
As a first macro tracker, Lose It! is easy to live with: it onboards new users better than any other manual app, scans barcodes for free, and as of November 2026 its paid tier runs about $40 a year. For precise macro work it’s a weaker choice, at ±9.4% in manual entry, a figure from one study.
Pros of Lose It!
- Better onboarding than any other manual app
- Barcode scans cost nothing
Cons of Lose It!
- Logging error of ±9.4% (manual entry)
- Figure comes from one study
MyFitnessPal
- Measured
- Error: ±11.2% (manual entry)
- Price: Free; barcode scanning needs the $79.99/yr plan
MyFitnessPal’s database is the biggest we reviewed, but for macros, size cuts both ways: entries are crowd-sourced, so the protein value on one entry may not match another for the same food. In manual entry it measured ±11.2%, the highest of the manual apps, and as of November 2026, scanning barcodes requires its $79.99-a-year plan.
Pros of MyFitnessPal
- The largest raw database in our review
Cons of MyFitnessPal
- Crowd-sourced, unverified entries
- ±11.2% in manual entry
- Barcode scans need the $79.99/yr plan
Pick by the target you’re chasing
Start from the target you’re trying to hit:
- A daily protein number, logged as accurately as possible. PlateLens, with the lowest error in photo and manual modes alike.
- Targets that adjust as your weight changes. MacroFactor recalculates them as your weight trend moves, and PlateLens adapts your calorie target on its free plan.
- Macros and micronutrients together. Cronometer’s micronutrient database is the deepest we reviewed; PlateLens tracks 82+ nutrients, with full detail in premium.
- A regular review of your numbers. MyNetDiary has strong reports; PlateLens premium has reports too.
- Your first go at macros. Lose It!, whose onboarding is the best of any manual app we tested.
Whichever you pick, weigh the protein foods you eat most for a week or two. Once you can estimate those portions well, your log, and the macros calculated from it, should be more reliable in any app.
Macro-tracking questions
Do your accuracy figures cover protein, carbs and fat separately?
No. We publish one error figure per app. Macros are calculated from the food and portion you log, so logging accuracy drives all three, which is why we rank on that figure.
Which app adjusts my macro targets as I go?
MacroFactor does: it updates your targets from your weight trend, though it has no free tier. On PlateLens, the free plan adapts your calorie target.
Why is MacroFactor ranked above Cronometer when Cronometer scores higher overall?
For macros, logging accuracy and adaptive targets matter most. MacroFactor measured ±4.8% in manual entry against Cronometer’s ±6.8%, and it adjusts targets from your weight trend. Cronometer’s free tier and micronutrient depth earn it the higher overall score.
Can I track micronutrients alongside my macros?
Yes. Cronometer has the deepest micronutrient database we reviewed, and PlateLens tracks 82+ nutrients, with full detail in premium.
Do I need a food scale for accurate macros?
Not for every meal, but it helps while you learn. Manual-entry error, as we measure it, includes your own portion estimate, so weighing your most frequent foods for a while sharpens those estimates. Photo logging, as in PlateLens, estimates the portion for you.
Testing note
The figures come from a weighed-food validation of 180 meals, each one prepared and portioned under controlled conditions, logged in each measured app and compared with weighed reference values. That tests the step every macro depends on: recording the right portion of the right food. PlateLens was measured in photo mode and manual entry; the other four apps with figures (MacroFactor, Cronometer, Lose It! and MyFitnessPal) only in manual entry. Each app has a single error figure, with no separate protein, carb or fat results, and PlateLens’s is the only one tested again, on a second set of 231 meals. The study is published as a pre-print by the Dietary Assessment Initiative.
Why this order: logging accuracy first, then features that matter for macro targets, then price. That puts MacroFactor (±4.8% in manual entry, adaptive targets) above Cronometer (±6.8%), even though Cronometer’s overall score is a touch higher. MyNetDiary is unmeasured and placed on features. Prices were checked in November 2026.
Prices as of November 2026. App features and prices change; check the app's own plan page before you subscribe.