Updated Jul 11, 2026 · Verified by SAC team
Top 8 Best Calorie Tracking Apps for Weight Loss (2026)
Body · beginner

Top 8 Best Calorie Tracking Apps for Weight Loss (2026)

Bodybeginner
▸ The ranked list

8 picks — ranked by our 50/50 methodology

  1. #1
    Best overall — most accurate
    Cronometer app icon — the accurate, curated calorie and nutrition tracking app

    Cronometer

    Cronometer Software · the most accurate, curated food database + deep micronutrients
    SAC Product Score™ — how it breaks down
    • Food database accuracy & size35%9.7
    • Ease & logging speed25%8.8
    • Macro & data features25%9.4
    • Value / free tier15%9.0

    The most accurate tracker here: a curated, staff-vetted food database instead of crowd-sourced guesswork, plus the deepest micronutrient tracking of any app — and a genuinely generous free tier.

    Free; optional Gold subscription
    Maker
    Cronometer Software Inc.
    Database
    Curated + staff-vetted (USDA, NCCDB) — not open crowd-sourcing
    Standout
    Tracks ~80+ nutrients incl. full micronutrient panel
    Pricing
    Free tier (generous); Gold subscription optional
    Pros
    • The most accurate food database on the list — vetted, curated sources rather than openly editable crowd-sourcing
    • Unmatched nutrition depth: tracks vitamins, minerals and amino acids, not just calories and macros
    • Generous free tier means you get the accuracy without paying; Gold adds extras rather than gating the basics
    • Clean, trustworthy logging — the right tool when you actually want the number to be correct
    Cons
    • Fewer branded and restaurant items than MyFitnessPal, so some packaged foods take more effort to find or enter
    • Slightly more deliberate to log than the fastest apps — the trade-off for a vetted, accurate database

    Our take — If you're going to trust an app with your diet, trust the accurate one. Cronometer is built on curated, staff-vetted data (USDA and the NCCDB) rather than the open crowd-sourcing that fills rival databases with duplicate and wrong entries — so the calories you log are far likelier to be real, which is the single most important property of a tracking tool. On top of that it tracks more micronutrients than anything else here, and its free tier is generous enough that most people never need to pay. The honest trade-off is coverage: it carries fewer branded and restaurant items than MyFitnessPal, so the occasional packaged food takes more effort. But for accuracy-first tracking — the thing that actually determines whether your logged deficit is a real deficit — it's the best tool on this list, and our #1.

  2. #2
    Biggest database / easiest
    MyFitnessPal app icon — the calorie counter with the largest food database

    MyFitnessPal

    MyFitnessPal, Inc. · the largest food database and the world's default tracker
    SAC Product Score™ — how it breaks down
    • Food database accuracy & size35%9.5
    • Ease & logging speed25%9.2
    • Macro & data features25%8.6
    • Value / free tier15%8.4

    The world's default tracker for a reason: the largest food database and the fastest, most familiar logging anywhere. The honest catch is a crowd-sourced database and a growing paywall.

    Free; Premium subscription for full features
    Maker
    MyFitnessPal, Inc.
    Database
    Largest available — but crowd-sourced (variable accuracy)
    Standout
    Barcode scan, restaurant items, recipe import, huge ecosystem
    Pricing
    Free; Premium for barcode scan + most features
    Pros
    • The largest food database in the category — almost anything you eat, including branded and restaurant foods, is in there
    • The fastest, most familiar logging experience, with the most mature barcode scanner and the biggest set of integrations
    • Strong macro tracking and a vast ecosystem (wearables, apps, recipes) that make it the easy default for most people
    • Free to start, with a low learning curve — the app most people will actually keep using day to day
    Cons
    • The database is crowd-sourced, so it's full of duplicate and inaccurate entries — you have to cross-check questionable foods
    • Barcode scanning and most genuinely useful features now sit behind the Premium paywall, narrowing the free tier

    Our take — MyFitnessPal is the world's default calorie tracker, and that's earned: it has the biggest food database, the easiest and most familiar logging, the best barcode and restaurant coverage, and an ecosystem nothing else matches — so almost anything you eat is already in it, and you'll log fast. It lands at #2 rather than #1 for two honest reasons. First, accuracy: the database is crowd-sourced and openly editable, so it's riddled with duplicate and incorrect entries, and a careless pick can quietly wreck your numbers. Second, value: MyFitnessPal has steadily moved features behind Premium — most painfully barcode scanning, which used to be free — so the free tier is weaker than it once was. If you'll pay for Premium and you want the biggest, easiest database, it's excellent. If accuracy or a free barcode scanner matters more, Cronometer is the better tool.

  3. #3
    Best macros & data
    MacroFactor app icon — the adaptive macro tracking app from Stronger By Science

    MacroFactor

    Stronger By Science · adaptive calorie/macro targets + verified-entry database
    SAC Product Score™ — how it breaks down
    • Food database accuracy & size35%8.8
    • Ease & logging speed25%9.2
    • Macro & data features25%9.6
    • Value / free tier15%7.8

    The best data engine on the list: an adaptive expenditure algorithm that sets honest, self-adjusting calorie and macro targets, paired with verified-entry foods and very fast logging.

    Subscription only (free trial)
    Maker
    Stronger By Science Technologies LLC
    Standout
    Adaptive expenditure algorithm → self-adjusting targets
    Database
    Large, with verified-entry checkmarks for trustworthy foods
    Pricing
    Subscription only — no permanent free tier (free trial)
    Pros
    • The best adaptive engine here: it recalculates your real energy expenditure from logged intake + weight, so targets stay honest
    • Very fast, modern, frictionless logging — among the quickest day-to-day experiences on the list
    • Verified-entry checkmarks flag trustworthy database foods, blending big coverage with better-than-crowd-sourced accuracy
    • Built by Stronger By Science — strong, evidence-minded macro and trend analytics for serious users
    Cons
    • No permanent free tier — it's subscription-only after a trial, so you're committing to pay
    • Overkill for someone who just wants to loosely count calories — the adaptive engine is its whole point

    Our take — MacroFactor is the data nerd's pick and the strongest engine on this list. Instead of a static formula, it learns your actual energy expenditure from your logged intake and weight trend and adjusts your calorie and macro targets accordingly — which is a genuinely more honest way to run a deficit than a one-time TDEE guess. Logging is fast and modern, and its verified-entry checkmarks give you much of MyFitnessPal's coverage with better trustworthiness. It sits at #3 only because it's subscription-only with no permanent free tier, and because that adaptive depth is more than a casual calorie-counter needs. For a lifter or anyone serious about body recomposition who wants self-adjusting targets and clean data, it's the best tool here — just know you're paying for the engine.

  4. #4
    Best free / easiest for beginners
    Lose It! app icon — the friendly calorie counter with a strong free tier

    Lose It!

    FitNow · friendly, fast calorie counting with a strong free tier
    SAC Product Score™ — how it breaks down
    • Food database accuracy & size35%8.6
    • Ease & logging speed25%9.0
    • Macro & data features25%8.2
    • Value / free tier15%8.8

    The friendliest, fastest app for beginners, with a genuinely usable free tier, barcode scanning, and a 'Snap It' photo-logging feature that lowers the friction of daily tracking.

    Free; optional Premium subscription
    Maker
    FitNow
    Standout
    'Snap It' photo logging + barcode scanning in the free tier
    Database
    Large; partly user-contributed (accuracy varies)
    Pricing
    Free tier (genuinely usable); Premium optional
    Pros
    • One of the friendliest, fastest onboarding experiences — ideal for someone new to calorie tracking
    • Genuinely usable free tier that includes barcode scanning, unlike MyFitnessPal's paywalled scanner
    • 'Snap It' photo logging and a clean goal-setting flow keep daily tracking low-friction and sticky
    • Solid macro tracking and challenges that help beginners build the logging habit
    Cons
    • Like MyFitnessPal, the food database is partly user-contributed, so accuracy is inconsistent — cross-check odd entries
    • Deeper features (macros by meal, planning) are nudged toward Premium, though the free tier covers the essentials

    Our take — Lose It! is the best on-ramp on this list and our pick for anyone new to tracking. It's friendly and fast, its free tier is genuinely usable (and crucially includes barcode scanning, which MyFitnessPal now charges for), and touches like 'Snap It' photo logging make the daily habit low-friction — which matters more than almost anything, since tracking only works if you keep doing it. It ranks #4 because its database is partly user-contributed like MyFitnessPal's, so accuracy is inconsistent, and its deepest features lean toward Premium. But for a beginner who wants to start counting calories today, for free, with the gentlest learning curve, it's the easiest yes — pair it with a food scale early and you'll build a habit that sticks.

  5. #5
    Best free runner-up
    YAZIO app icon — the clean, popular calorie and macro counter

    YAZIO

    YAZIO · clean, popular calorie & macro counter with a solid free tier
    SAC Product Score™ — how it breaks down
    • Food database accuracy & size35%8.2
    • Ease & logging speed25%8.8
    • Macro & data features25%8.0
    • Value / free tier15%8.6

    A clean, popular, easy calorie and macro counter with a solid free tier and good fasting and meal-plan extras — a strong alternative if Lose It! or MyFitnessPal don't click.

    Free; optional PRO subscription
    Maker
    YAZIO
    Standout
    Clean interface + fasting tracker and meal plans
    Database
    Good, but smaller US/branded coverage than MyFitnessPal
    Pricing
    Free tier solid; PRO unlocks plans and richer features
    Pros
    • Clean, modern, and easy to use, with a solid free tier for straightforward calorie and macro counting
    • Built-in intermittent-fasting tracker and meal plans add structure for people who want more than a bare log
    • Popular worldwide with a polished experience — a strong alternative if the bigger US apps don't suit you
    • Good barcode scanning and quick logging keep the daily habit easy
    Cons
    • Its branded and US-specific food coverage is smaller than MyFitnessPal's, so some packaged foods are missing
    • The richest features (meal plans, deeper analytics) are reserved for the PRO subscription

    Our take — YAZIO is the strong free runner-up — a clean, popular, easy calorie and macro counter that's an excellent alternative if Lose It! or MyFitnessPal don't click for you. Its free tier handles everyday calorie and macro tracking well, and the built-in fasting tracker and meal plans give structure-seekers more than a bare log without forcing an upgrade. It lands at #5 mainly on database coverage: its branded and US-specific food selection trails MyFitnessPal's, so you'll occasionally have to enter a packaged food yourself, and its best extras sit behind PRO. For a no-cost, well-designed tracker — especially for users outside the US or anyone who wants fasting support baked in — it's a genuinely good choice.

  6. #6
    Best-designed / habit-focused
    Lifesum app icon — the design-led calorie and diet-plan app

    Lifesum

    Lifesum · a polished, design-led calorie and diet-plan app
    SAC Product Score™ — how it breaks down
    • Food database accuracy & size35%7.8
    • Ease & logging speed25%8.8
    • Macro & data features25%7.8
    • Value / free tier15%8.0

    The best-looking app here: a polished, motivating interface with structured diet plans layered on the calorie log — the pick if a beautiful daily experience is what keeps you consistent.

    Free; most features via Premium subscription
    Maker
    Lifesum AB
    Standout
    Design-led UX + structured diet plans (keto, high-protein, etc.)
    Database
    Decent, but shallower than the leaders
    Pricing
    Free to start; most real value behind Premium
    Pros
    • Beautifully designed and genuinely motivating — for some people, a pleasant interface is what sustains the habit
    • Structured diet plans (keto, high-protein, and more) layer guidance on top of plain calorie counting
    • Clean, fast logging and a friendly experience that lowers the activation energy of daily tracking
    • Good for people who want their tracker to feel like a lifestyle app rather than a spreadsheet
    Cons
    • Its food database and macro depth trail the leaders, so accuracy and coverage are merely okay
    • Most of the real value (plans, full features) sits behind Premium, and the free tier is comparatively thin

    Our take — Lifesum is the design-led choice, and that's a more legitimate selling point than it sounds — because the whole game is consistency, and a beautiful, motivating interface is genuinely what keeps some people logging. It pairs clean, fast tracking with structured diet plans (keto, high-protein, and so on) that add guidance beyond a bare calorie total. It ranks #6 because the fundamentals trail the leaders: its food database and macro depth are merely okay rather than excellent, and most of the real value lives behind Premium. If the apps above feel clinical and you know you'll stick with the tracker you enjoy opening, Lifesum is a reasonable pick — just don't expect the database accuracy of Cronometer or the coverage of MyFitnessPal.

  7. #7
    Best macro coaching
    Carbon Diet Coach app icon — adaptive macro coaching from Layne Norton

    Carbon Diet Coach

    Reform (Layne Norton) · adaptive macro coaching for committed lifters
    SAC Product Score™ — how it breaks down
    • Food database accuracy & size35%7.6
    • Ease & logging speed25%8.0
    • Macro & data features25%9.0
    • Value / free tier15%7.0

    Layne Norton's adaptive macro coach in an app: it adjusts your macro targets to your real weekly results like a coach would — built for committed dieters, not casual loggers.

    Subscription only (free trial)
    Maker
    Reform LLC (created by Dr. Layne Norton)
    Standout
    Coach-style adaptive macro targets from weekly check-ins
    Database
    Functional but leaner than MyFitnessPal
    Pricing
    Subscription only (free trial)
    Pros
    • Excellent adaptive macro coaching — it adjusts your targets to your real weekly progress the way a human coach would
    • Created by Dr. Layne Norton, with an evidence-based, results-driven approach to dieting and recomposition
    • Great for committed lifters and dieters who want algorithmic 'coaching', not just a running calorie total
    • Strong for cutting, bulking, and reverse dieting — structured guidance most plain trackers don't offer
    Cons
    • Its food database and logging are leaner and less slick than MyFitnessPal's, so day-to-day logging is less effortless
    • Subscription-only with no free tier, and genuinely overkill for someone who just wants to count calories

    Our take — Carbon Diet Coach is the coaching pick for committed dieters. Built by Dr. Layne Norton, it behaves like an algorithmic coach: you check in weekly, and it adjusts your macro targets based on your actual results — cutting, bulking, or reverse dieting — which is exactly what a serious lifter wants from a tool. Its macro and adaptive-targeting depth is among the best here. It sits at #7 because the everyday fundamentals are weaker than the leaders': the food database and logging are leaner and less frictionless than MyFitnessPal's, and it's subscription-only with no free tier. For a casual calorie-counter it's overkill; for someone who genuinely wants coaching-grade macro guidance and will log diligently, it's a strong, purpose-built choice.

  8. #8
    Coaching program (weakest tracker)
    Noom app icon — the psychology-based weight-loss coaching program

    Noom

    Noom, Inc. · a psychology-based coaching program with a calorie log attached
    SAC Product Score™ — how it breaks down
    • Food database accuracy & size35%7.2
    • Ease & logging speed25%8.2
    • Macro & data features25%6.8
    • Value / free tier15%6.4

    Not really a calorie tracker — a psychology-based behaviour-change program with daily lessons and a coach, with a food log bolted on. Included honestly, and ranked last for exactly that reason.

    Expensive subscription (commonly ~$70/month)
    Maker
    Noom, Inc.
    What it really is
    Psychology-based coaching program, not a dedicated tracker
    Tracker quality
    Weakest here — database + logging trail dedicated apps
    Pricing
    Expensive — commonly ~$70/month (often via a multi-month plan)
    Pros
    • A genuine behaviour-change program: daily psychology lessons, habit coaching, and a human coach, not just a log
    • The psychology and accountability genuinely help some people change eating habits where a bare tracker wouldn't
    • Polished onboarding and a supportive, structured experience aimed at the mindset side of weight loss
    • Reasonable if your real bottleneck is behaviour and habits rather than knowing your numbers
    Cons
    • As a calorie TRACKER it's the weakest on this list — the food database and logging are less accurate and more cumbersome
    • Expensive (around $70/month) — you're paying coaching prices for a weak tracker, the wrong trade for most readers

    Our take — Noom rounds out the list, and we include it honestly precisely to set expectations. Despite the weight-loss marketing, Noom is not really a calorie-tracking app — it's a psychology-based behaviour-change PROGRAM built around daily lessons, habit work, and a coach, with a food log attached. As a pure tracker it's the weakest here: the database and logging are less accurate and more cumbersome than MyFitnessPal's or Cronometer's, and that's simply not where its effort goes. And it's expensive — commonly around $70 a month, far more than any tool on this list. If your genuine bottleneck is mindset and habits, and the coaching clicks, some people find it worth it. But if what you actually need is to count calories accurately and hold a deficit, you'll do that better, and for free, with Cronometer, Lose It!, or YAZIO. It's #8 because paying coaching prices for a weak tracker is the wrong trade for most people — and we won't pretend otherwise.

▸ Affiliate disclosure: every Amazon link uses our Associates tag (superachieverclub-20). We earn a small commission at no cost to you; it funds independent reviews. We never accept payment to change a ranking.

▸ Why it matters

The Deficit Does the Work. The App Just Makes It Visible.

  1. 01

    Tracking works through awareness, not magic.

    Logging forces an honest accounting most people badly underestimate, which is what makes a calorie deficit visible enough to hold. The behaviour is well-supported: self-monitoring is one of the most consistent predictors of weight-loss success (Burke 2011), the heaviest food-loggers lost about twice as much weight (Hollis 2008), and more frequent digital logging tracked directly with more loss (Harvey 2019).

  2. 02

    The app is a tool, not the mechanism.

    A primary-care RCT that simply gave overweight patients MyFitnessPal, with no coaching or support, found no significant weight loss over six months because logging faded (Laing 2014). The app never removes the need to actually create the deficit. So these are ranked as tools: the best one is the one you'll log in accurately and consistently.

  3. 03

    We rank on accuracy first, not the flashiest AI or the boldest promise.

    A logged number you can't trust is worse than useless, so food-database accuracy carries the most weight (35%). Cronometer leads because its database is curated and staff-vetted (built on USDA and NCCDB data) rather than openly crowd-sourced, so the number you log is far likelier to be real, plus it tracks more micronutrients than anything else.

  4. 04

    Biggest isn't best, and last place is earned honestly.

    MyFitnessPal is #2 for the biggest database and easiest logging, but its crowd-sourced entries are error-prone and it has moved barcode scanning and most useful features behind a paywall. Noom sits last on purpose: an expensive psychology-coaching program, not really a calorie tracker, whose built-in food log is the weakest part of the product.

Behaviour evidence from 4 verified PMIDs (Burke 2011, Hollis 2008, Harvey 2019, Laing 2014); apps scored 35% database accuracy / 25% logging speed / 25% macros / 15% value — full scoring in the methodology below.

▸ Methodology

How we ranked these eight

Each app was scored 0-10 across four criteria, then weighted to a final composite. Food-database accuracy and size carries the most weight (35%) because it's the foundation of the whole tool: a logged calorie figure you can't trust is worse than no figure at all, and an app that doesn't contain the foods you actually eat won't get used. This splits two ways — Cronometer wins on accuracy (curated, staff-vetted, USDA/NCCDB-based entries rather than open crowd-sourcing), while MyFitnessPal wins on sheer size and branded/restaurant coverage; we reward both but weight accuracy heavily because that's where most apps quietly fail. Ease and logging speed (25%) is next and nearly as important in practice, because the evidence is blunt that tracking only works if you keep doing it (Harvey 2019; Laing 2014) — barcode scanning, photo logging, saved meals, and low friction are what sustain the habit. Macro and data features (25%) reward depth for serious users: macro targets, micronutrients, adaptive expenditure algorithms, trends and exports — this is where MacroFactor and Carbon pull ahead and where a bare calorie counter falls short. Value and free tier (15%) is the lightest weight and the tie-breaker: how much works for free, and the price if you upgrade — it's why MyFitnessPal's paywalling of barcode scanning and Noom's high cost count against them, and why the genuinely usable free apps earn ground. We do not invent figures. Every clinical claim on this page rests on four verified sources (Burke 2011, Hollis 2008, Harvey 2019, Laing 2014), and we state the honest limit plainly: the app is a tool, the deficit is the mechanism.

  • Food database accuracy & size35%

    The foundation: is a logged number actually correct, and is the food you eat (including branded and restaurant items) in the database? Cronometer scores highest on accuracy — curated, vetted, staff-reviewed entries from USDA/NCCDB sources rather than open crowd-sourcing. MyFitnessPal scores highest on size and coverage but loses points for the duplicate and inaccurate entries crowd-sourcing creates. A trustworthy, complete database is the single most important thing in a tracker.

  • Ease & logging speed25%

    How fast and frictionless it is to log — barcode scanning, photo logging, saved/recent meals, recipe import, quick-add. This gets heavy weight because the research is clear that tracking only works if you sustain it (Harvey 2019), and when logging fades the benefit disappears (Laing 2014). The best app on this axis is the one you'll actually keep opening every day, messy days included.

  • Macro & data features25%

    Depth for serious users: macro targets, micronutrient tracking, adaptive TDEE/expenditure algorithms, weight-trend analysis, and data export. MacroFactor and Carbon Diet Coach lead with adaptive, self-adjusting targets; Cronometer leads on micronutrient depth. A basic running calorie total scores lower here — this is the line between a simple counter and a real body-composition tool.

  • Value / free tier15%

    The lightest weight and the tie-breaker: how much genuinely works for free, and what you pay to upgrade. Generous free apps (Lose It!, YAZIO, free Cronometer) earn ground; MyFitnessPal loses some for moving barcode scanning behind Premium, and Noom loses the most for charging coaching-tier prices (~$70/month) for a weak tracker. A great tool you'll actually pay for sustainably beats an expensive one you'll cancel.

How it works — illustrated blueprint
▸ Verdict

The bottom line

  1. 01

    Cronometer (#1) is the overall winner.

    It has the most accurate, curated, staff-vetted food database, the deepest micronutrient tracking of any app here, and a free tier generous enough to start today for nothing. Accuracy is the single most important property of a tool you're trusting with your diet, which is why it leads.

  2. 02

    Alternatives by need: MyFitnessPal (#2), MacroFactor (#3)/Carbon (#7), Lose It! (#4)/YAZIO (#5).

    MyFitnessPal (#2) is the world's default for coverage and convenience, if you watch its crowd-sourced entries and paywalled barcode scanner. For serious, self-adjusting macros, MacroFactor (#3) is the best engine and Carbon Diet Coach (#7) the coaching-style alternative, both subscription-only. For the best free everyday app, Lose It! (#4) is the friendliest for beginners and YAZIO (#5) is right behind; Lifesum (#6) wins on design.

  3. 03

    The app is a tool, not magic — put your real effort into the deficit.

    Handed out with no support, tracking produced no significant weight loss because logging faded (Laing 2014); the benefit lives entirely on whether you keep using it and actually create the deficit. Pick the app you'll log in accurately and consistently, set an honest calorie target, weigh your food for the first few weeks, and judge progress on the weekly trend.

▸ Research & sources

Every claim ranked above traces back to one of these

Peer-reviewed studies, meta-analyses and clinical trials behind the picks. Click any citation to read the abstract on PubMed.

  1. [1]
    Burke 2011Burke LE, Wang J, Sevick MA · 2011 · Journal of the American Dietetic Association · PMID 21185970

    Self-monitoring in weight loss: a systematic review of the literature

    Systematic review of the self-monitoring literature: across studies, recording food intake (and weight/activity) was consistently and significantly associated with greater weight loss. The foundational evidence that the behaviour these apps enable — self-monitoring — is one of the most reliable predictors of weight-loss success, and the reason a calorie tracker helps at all.

  2. [2]
    Hollis 2008Hollis JF, Gullion CM, Stevens VJ, Brantley PJ, Appel LJ, Ard JD, Champagne CM, Dalcin A, Erlinger TP, Funk K, Laferriere D, Lin PH, Loria CM, Samuel-Hodge C, Vollmer WM, Svetkey LP · 2008 · American Journal of Preventive Medicine · PMID 18617080

    Weight loss during the intensive intervention phase of the weight-loss maintenance trial

    In a large behavioural weight-loss trial (n≈1,685), the strongest single predictor of weight loss was the number of food records kept: participants who kept the most daily food diaries lost about twice as much weight as those who kept the fewest. Direct evidence that the volume and consistency of food tracking — not just doing it once — drives results.

  3. [3]
    Harvey 2019Harvey J, Krukowski R, Priest J, West D · 2019 · Obesity (Silver Spring) · PMID 30801989

    Log Often, Lose More: Electronic Dietary Self-Monitoring for Weight Loss

    Analysis of electronic (app/web) dietary self-monitoring in a behavioural weight-loss program: more frequent digital food logging was associated with greater weight loss, and the time it took to log dropped over the program. The app-era confirmation of the same principle — consistent digital tracking works — and the source of the 'log often, lose more' framing on this page.

  4. [4]
    Laing 2014Laing BY, Mangione CM, Tseng CH, Leng M, Vaisberg E, Mahida M, Bholat M, Glazier E, Morisky DE, Bell DS · 2014 · Annals of Internal Medicine · PMID 25402403

    Effectiveness of a smartphone application for weight loss compared with usual care in overweight primary care patients: a randomized, controlled trial

    Randomized controlled trial: overweight primary-care patients given the MyFitnessPal app (with no added behavioural support) showed NO significant weight loss versus usual care over six months, and app use declined sharply after the first month. The honest, app-specific evidence that a calorie tracker is a tool, not magic — it only helps if logging is sustained, and it never replaces creating the deficit. Cited here to set expectations, not to discourage tracking.