Macro Tracking Apps Compared
Five tracking apps cover the entire market. Pick one based on what you actually want to track and how much you're willing to manage.
- MyFitnessPal — biggest food database, weakest data quality. Default for most beginners.
- Cronometer — accurate database with full micronutrients. Best for people who care about more than the big three.
- MacroFactor — adaptive targets based on tracked weight + intake. Best for people who keep "stalling."
- Carbon Diet Coach — algorithmic check-ins that adjust your plan weekly. Coach-light experience.
- Lose It! — simpler MFP alternative; good barcode scanner, US-centric database.
Quick comparison table
| App | Free tier | Strength | Weakness |
|---|---|---|---|
| MyFitnessPal | Limited (barcode behind paywall) | Massive crowdsourced food DB, every restaurant covered | Lots of inaccurate user-submitted entries; ad-heavy |
| Cronometer | Full free tier with ads | Curated database, full vitamins/minerals tracking | Smaller restaurant coverage; less polished UX |
| MacroFactor | 2-week trial only | Algorithm adjusts targets weekly based on real data | Subscription-only; learning curve |
| Carbon | No | Weekly check-in adjustments, simple to follow | Requires another app for food logging |
| Lose It! | Yes (basic) | Friendlier UX than MFP, good US barcode coverage | Macro tracking gated behind premium |
MyFitnessPal
The default. The food database is enormous because anyone can add entries — which is also its biggest weakness. Search "chicken breast" and you'll find dozens of entries with macros that disagree by 30%. The fix is to pick one accurate entry per food (verify against USDA values) and star it as a favorite. Once you've built a personal library, MFP is fast.
Pros: barcode scanner with the largest US/UK product coverage; recipe import from URLs; meal copy from any past day. Cons: free tier is increasingly stripped; ad-heavy.
Cronometer
The serious tracker's choice. Database is smaller but vetted (NCCDB, USDA backbone). Tracks 80+ nutrients including vitamins, minerals, individual amino acids, and omega-3/6 ratios. Best for people who want to see whether they're actually hitting magnesium and B12 — not just protein.
Pros: accuracy; micronutrient depth; clean UI. Cons: smaller restaurant database; barcode coverage thinner outside North America.
MacroFactor
The newest serious player. You log weight and intake; the algorithm calculates your real TDEE every week and adjusts your calorie target so you stay on track for whatever rate you set. No more manual cuts every six weeks. Built by the team behind Stronger By Science, so the underlying methodology is solid.
Pros: adaptive coaching that actually works; clean food database; great for people who plateau. Cons: subscription-only after the trial (~$72/year); requires consistency for the algorithm to learn.
Carbon Diet Coach
Built by Layne Norton. You log weight and check in weekly; Carbon tells you to bump or cut calories. It doesn't include a full food logging interface — pair it with MFP or another logger. Best for people who want a "coach in an app" without joining an actual coaching service.
Pros: simple, structured weekly adjustments. Cons: not a one-stop app; subscription-only.
Lose It!
The friendlier MFP alternative. Smaller database but cleaner UX, and a snap-a-photo logging feature that works surprisingly well for packaged foods. Macros are paywalled in the premium tier.
Pros: easier onboarding for non-trackers; good visual food logging. Cons: macro tracking and detailed reports require the paid plan.
Which one should you pick?
- Brand-new tracker, want it free: MyFitnessPal or Lose It!
- Care about full nutrition, not just macros: Cronometer.
- Keep stalling and want auto-adjusting targets: MacroFactor.
- Want a "coach feel" without paying $200/month: Carbon (paired with MFP).
- Hate logging at all: use a paper food journal for two weeks to learn portion sizes, then switch to soft tracking.
The honest truth about all of them
The best app is the one you'll actually open every day. App-hopping wastes the food library you build. Pick one, learn its quirks, and stay there for at least 90 days before deciding it's wrong.
Features worth caring about
- Barcode scanner — reduces logging friction more than any other feature.
- Recipe builder — enter a multi-ingredient recipe once; log "1 serving" thereafter.
- Saved meals / meal copy — copy yesterday's lunch in two taps.
- Custom macro targets — every app supports basic targets; only some support training-day vs rest-day variation.
- Weight sync (Apple Health, Google Fit, Withings) — auto-imports daily weights for trend graphs.
- Restaurant database — varies wildly. MFP and Lose It! are best for chain restaurants in the US.
Privacy and data ownership
Worth knowing: most of these apps sell anonymized data to food and pharma companies. Cronometer is the most privacy-respecting of the bunch (subscription-funded, fewer ads). MyFitnessPal had a major breach in 2018 — change passwords periodically. None of this changes the recommendation, but it's worth a moment of attention.