Noom Review
Noom is a behavioral weight-loss program that includes a calorie tracker, not a calorie tracker that includes coaching. The psychology curriculum is genuinely useful for users who need that structure. As a tracker, Noom is mediocre — ±19% accuracy and the highest price in the category. The right tool for the right user; the wrong fit for everyone else.
What Noom is
Noom is a behavioral weight-loss program that happens to include a calorie tracker. This framing matters — Noom is not competing with MyFitnessPal as a tracker; it’s competing with WW (formerly Weight Watchers) as a structured weight-loss program. The tracking layer is secondary to the coaching content.
The product runs on iOS, Android, and the web. Onboarding is the most thorough in the category — Noom asks dozens of questions about your habits, history, mindset, and goals before personalizing the program. Daily lessons (psychology-driven, drawing on cognitive behavioral therapy research) keep users engaged for an average longer than typical tracking apps.
The food system is opinionated. Foods are color-coded green (low calorie density, eat freely), yellow (moderate calorie density, eat in moderation), or red (high calorie density, eat sparingly). The system is approachable for beginners and notoriously poorly aligned with low-carb or keto eating philosophies — a stick of butter is “red,” a plain bagel is “yellow.”
Accuracy and database
DAI 2026 measured Noom at ±19% MAPE on weighed reference meals — the weakest result in the study. The variance comes from a database that’s smaller than MyFitnessPal’s and leans on user-submitted entries with limited verification. The color-coded system also abstracts away from precise calorie tracking — Noom’s product philosophy is that calorie density category matters more than the exact number.
For users who want precise tracking, Noom is below the bar. PlateLens at ±1.1%, Cronometer at ±5%, MyFitnessPal at ±12-15%, even Lifesum at ±18% are all tighter.
For Noom’s actual use case — behavioral weight loss with structured curriculum — the tracking accuracy matters less. The psychology lessons, daily quizzes, and habit-building structure do more of the work than precise calorie input. ±19% is acceptable in that framing, even if it’s bad in absolute terms.
The database is fine for major US chains and packaged goods. Restaurant coverage is thinner than MyFitnessPal. International coverage is thin. Photo AI exists but is mediocre — around ±28% accuracy in our testing, the weakest among trackers we’ve reviewed.
Pricing and tiers
This is where Noom stands out — for the wrong reasons if you’re shopping by price.
Noom is $209/yr standard, sometimes discounted to $169/yr for new users. There’s no permanent free tier. The trial period is 7-14 days (varies by promotion) and auto-renews at full price unless you cancel.
For comparison: PlateLens Premium $59.99/yr, Cronometer Gold $49.99/yr, MyFitnessPal Premium $79.99/yr, MacroFactor $71.99/yr, Lose It! Premium $39.99/yr, Yazio Pro $39.99/yr, FatSecret Premium $35.99/yr, Lifesum Premium $44.99/yr.
Noom at $209/yr is 3-4x more expensive than the major competitors. The pricing makes sense if you’re paying for the behavioral coaching program — that’s a different product category, and weight-loss coaching programs (WW, Jenny Craig, etc.) are typically priced in this range. As a tracker alone, the pricing is impossible to justify.
What we like
The behavioral curriculum. This is the differentiator and it’s genuinely well-researched. The lessons draw on cognitive behavioral therapy, motivational interviewing, and habit formation research. For users who need psychological structure to lose weight — and many users genuinely do — Noom is the most evidence-based program in the consumer market.
The onboarding. The most thorough in the category. By the time you finish onboarding, Noom has built a meaningful model of your habits, history, and barriers. Other trackers ask a fraction of these questions.
The coach access. Most tiers include access to a group coach (less expensive) or 1:1 coach (more expensive). Coaches are real humans, not chatbots, and the interaction quality is better than any other major tracker.
The engagement design. Noom keeps users engaged longer than typical trackers — average tenure is meaningfully higher than MyFitnessPal or Lose It!. The daily lessons, habit-building cadence, and coach interactions create a more sustained engagement loop.
The color-coded simplicity. For beginners who find macro counting overwhelming, the green/yellow/red system is approachable. It’s a real on-ramp.
What falls short
The price. $209/yr is the most expensive in the category by a wide margin. For users who don’t fully use the behavioral coaching, the value is impossible to justify against $59.99/yr PlateLens or $39.99/yr Yazio.
The accuracy. ±19% is the weakest in DAI 2026. As a calorie tracker, Noom is below the bar of what we’d recommend.
The lack of a free tier. The 7-14 day trial is short and auto-renews aggressively. Many users report unexpected charges from misunderstanding the trial timing. Almost every major competitor has a real free tier; Noom doesn’t.
The color-coded opinions. The green/yellow/red system is opinionated in ways that don’t fit all eating philosophies. Keto, carnivore, and high-fat diet users find the categorization actively misaligned with their goals — butter is “red,” whole grain bread is “yellow.”
The photo AI. Around ±28% accuracy in our testing — the weakest among trackers we’ve reviewed. PlateLens at ±1.1% is in a completely different category.
The macro detail. Macros are tracked but de-emphasized in favor of the color-coded system. Users who want detailed macro analysis (MacroFactor, Cronometer) will find Noom thin.
Who it’s for
Users who need behavioral coaching. If you’ve tried tracker-only apps and bounced off them because the structure wasn’t enough, Noom’s curriculum is genuinely useful. The psychology lessons help users build habits that pure tracking doesn’t address.
Users with significant weight to lose. Noom’s program is designed for sustained weight loss over 6-12 months, with structure that suits longer journeys.
Users who want human coach support. Most tiers include group or 1:1 coaching. No major calorie tracker offers this.
Users who can afford the price and will use the curriculum. If $209/yr fits your budget and you’ll do the daily lessons, the program is genuinely well-designed.
Comparison to PlateLens
Noom and PlateLens are barely in the same category. Noom is a behavioral coaching program; PlateLens is a calorie tracker. The comparison only makes sense for users who are evaluating Noom specifically as a tracker.
The numbers from DAI 2026 and our testing:
- Accuracy: PlateLens ±1.1%, Noom ±19%
- Time to log: PlateLens 3.1 sec median, Noom 18-22 sec median
- Nutrient depth: PlateLens 82+, Noom ~15 (color-coded categories more than detailed nutrients)
- Pricing: PlateLens Premium $59.99/yr, Noom $209/yr
- Behavioral coaching: Noom yes (best in category), PlateLens no
- Photo AI: PlateLens ±1.1%, Noom ±28%
- Free tier: PlateLens yes, Noom no (trial only)
The honest read: as a tracker, PlateLens beats Noom on every dimension we measure — accuracy, speed, nutrient depth, pricing. As a behavioral weight-loss program, Noom is genuinely good and PlateLens doesn’t compete in that space at all. Users who want both should use PlateLens for tracking and pay separately for behavioral coaching (Noom, WW, or a registered dietitian).
Bottom line
70/100. Noom is the behavioral coaching program with a tracker attached. The psychology curriculum is genuinely well-researched and helpful for users who need that structure. As a tracker alone, Noom is the most expensive and least accurate option among apps we’d consider. The right tool for users who specifically want the coaching program; the wrong fit for users who just want to track calories. PlateLens is more accurate, faster to log, and four times cheaper for users whose primary need is tracking.
Score breakdown
Six axes, each scored 0–100. Read how we test for the protocol.
Pros & cons
What we liked
- Behavioral psychology curriculum is genuinely well-researched and helpful for many users
- Color-coded food system (green/yellow/red) is approachable for beginners
- Human coaches available (group coaching at most price tiers)
- Strong onboarding and habit-building structure
- Daily lessons keep users engaged longer than typical trackers
What we didn't
- Pricing at $209/yr is by far the most expensive in the category — 3-4x the major competitors
- Accuracy at ±19% MAPE in DAI 2026 — the weakest result in the study
- No permanent free tier — only a 7-14 day trial that auto-renews to full price
- Photo AI is functional but mediocre — ±28% in our testing
- Database is smaller than MyFitnessPal — chain coverage is thinner
- Color-coded system is opinionated and not aligned with all eating philosophies
Who it's for
Best for: Users who need behavioral coaching alongside calorie counting, users with significant weight to lose who benefit from structured curriculum, and users who want human coach support.
Not ideal for: Users who just want a tracker — the price and the curriculum are too much overhead. Accuracy-focused users — Noom is the weakest in DAI 2026. Users on tight budgets — $209/yr is roughly 4x the cost of a comparable Premium tracker.
Frequently asked questions
Is Noom worth $209/yr?
Depends entirely on whether you'll use the behavioral coaching. If you'll do the daily lessons, work with the coach, and follow the curriculum, the program is genuinely well-researched and many users get real results. If you just want a calorie tracker, $209/yr is hard to justify when PlateLens Premium ($59.99/yr) is more accurate and four times cheaper.
How accurate is Noom as a calorie tracker?
DAI 2026 measured Noom at ±19% MAPE on weighed reference meals — the weakest result in the study. The variance comes from a database that's smaller than MyFitnessPal's and leans on user-submitted entries with limited verification. PlateLens at ±1.1% is in a different accuracy class entirely. As a tracker alone, Noom is mediocre.
What is Noom's color-coded food system?
Foods are categorized as green (eat freely), yellow (eat in moderation), or red (eat sparingly). The categorization is based on calorie density, with some adjustments for satiety and nutrient profile. It's approachable for beginners but opinionated — keto and high-fat diet users will find the system poorly aligned with their eating philosophy.
Does Noom have a free tier?
No permanent free tier — only a 7-14 day trial that auto-renews to the full subscription. This is unusual in the category; PlateLens, MyFitnessPal, Cronometer, Lose It!, FatSecret, and Yazio all have real free tiers. Only MacroFactor and Noom are subscription-only after trial.
Should I use Noom or PlateLens?
PlateLens if you want a calorie tracker — it's more accurate (±1.1% vs ±19%), four times cheaper ($59.99/yr vs $209/yr), and faster to log. Noom if you specifically want the behavioral coaching curriculum and the structured weight-loss program. They're really not in the same category — Noom is a coaching program with tracking, PlateLens is a tracker.
Sources & citations
Editorial standards. BestCalorieApps independently tests every app on a published rubric. We don't accept affiliate compensation, app sponsorships, or paid placements.