Comparison

Lean vs Thyroid Compass

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Lean

This app uses AI to analyze your body composition and meals through photos. It automatically tracks calories, macros, and metabolic rate, providing scientifically precise data for weight loss and nutrition improvement.

Highlights
  • AI Body Scan for body composition analysis
  • AI Food Scan for automatic calorie and macro tracking
  • Personalized metabolic rate estimation
  • Integrated pedometer for step tracking
  • Scientifically validated analysis models
Features
Read full description

Lean – Become Lean and Stay Lean Lean is a next-generation metabolic and calorie-tracking app that uses advanced AI to scan your body (AI Body Scan) and analyze your meals in seconds (AI Food Scan). It delivers scientifically precise metabolic and caloric analyses, all within a clean, user-friendly interface. Whether you want to lose weight or simply improve your daily nutrition, Lean provides reliable data to help you reach your goals. Key Features Advanced AI Body Scan Just take a photo of your body. Lean’s algorithm analyzes your silhouette to estimate key metrics (like body fat percentage, BMI, and measurements) with scientific accuracy. Track your physique’s progress over time with this intelligent body scan. Automatic Calorie Counter Snap a photo of your plate and Lean’s AI identifies each food item, instantly calculating calories and macros (carbs, fats, proteins). No more tedious manual entries—get a full, reliable nutritional breakdown for every meal in seconds. Personalized Metabolic Tracking Based on your body profile and activity, Lean estimates your basal metabolic rate and calculates your daily calorie expenditure. The app also tracks your steps with a built-in pedometer, adjusting burned-calorie calculations in real time. Monitor calories consumed versus calories burned to optimize long-term weight loss. Scientific Reliability Lean’s metabolic and caloric analyses are grounded in validated scientific models. Developed with nutrition experts, Lean’s AI delivers consistent, credible results every scan—so you can trust your data to make the right decisions. Why Choose Lean? Lean stands out by fully automating everything with AI. Unlike traditional calorie counters that require manual input, Lean analyzes your meals with a single photo and does all the counting for you. Plus, you don’t need any specialized equipment to assess your body composition—a simple photo does what other solutions require expensive devices or professional consultations to achieve. Lean combines body scanning, calorie tracking, and pedometer features into one all-in-one app. This holistic, high-tech approach ensures more consistent, precise, and effective fitness tracking. Become Lean and Stay Lean Snap photos of your body and your meals to become Lean—and then stay Lean. Don’t wait to put this advanced technology to work for your health. IMPORTANT: SUBSCRIPTION DETAILS Access to all Lean features requires a subscription or one-time in-app purchase. No free content is included. Choose the plan that fits you: Monthly Subscription Annual Subscription Lifetime Purchase (available only within 3 days of first downloading the app) Prices may vary by country. Payment is charged to your Apple account upon purchase confirmation. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. SUPPORT CONTACT Email: support@lean-app.com LEARN MORE Privacy Policy: https://lean-app.com/en/politique-de-confidentialite/ Terms of Use: https://lean-app.com/en/conditions-generales-utilisations/ Help & Support: https://lean-app.com/en/support/ TDEE Calculator : https://lean-app.com/en/tdee-calculator/

About

Thyroid Compass

This app helps you understand your thyroid lab results by comparing them to both standard and optimal ranges. It provides plain-English explanations of markers, tracks trends over time, and identifies potential connections between your symptoms and lab values.

Highlights
  • Photo-based lab report interpretation
  • Comparison of standard vs. optimal lab ranges
  • Thyroid marker graphing over time
  • Symptom tracking and pattern identification
  • Doctor visit preparation summaries
  • Bulk lab report import
  • Personalized insights based on condition
Read full description

Your labs came back "normal." You still feel exhausted, foggy, and cold. If that sounds familiar, Thyroid Compass was built for you. Most lab reports flag a result only when it falls outside a very wide reference range. But many thyroid-literate clinicians target much tighter numbers — a TSH under 2.5 rather than under 4.5, for example. Thyroid Compass shows you both, so you can see where you actually stand instead of just being told you're fine. SNAP A PHOTO, GET A REAL EXPLANATION Photograph your lab report and get a plain-English breakdown of every thyroid marker — TSH, Free T3, Free T4, Reverse T3, TPO and thyroglobulin antibodies, plus co-factors like ferritin, vitamin D and B12. The interpretation is tuned specifically for thyroid conditions. It understands T4-to-T3 conversion problems, antibody trends, and why "normal TSH" doesn't always mean "well" — the things generic health apps miss entirely. SEE YOUR MARKERS OVER TIME Every marker graphed across every lab you've uploaded, with two bands overlaid: your lab's reference range, and the tighter optimal range many thyroid specialists aim for. Seeing them side by side is often the moment things click. PATTERNS YOU'D NEVER SPOT ALONE Log a 30-second daily check-in — fatigue, brain fog, cold sensitivity, mood — and the app looks across months of data for connections. Things like "your fatigue climbed the same weeks your Free T3 drifted down." Each insight comes with a confidence label, so you know which patterns are solid and which are just interesting. WALK INTO APPOINTMENTS PREPARED Generate a one-page summary your endocrinologist can read in sixty seconds: your recent labs with changes highlighted, your symptom trends, and specific questions worth asking. Print it or share it as a PDF. BRING YOUR HISTORY WITH YOU Got years of lab reports sitting in your camera roll? Import up to 20 at once. Each becomes its own dated entry, and your full history graphs immediately. BUILT FOR HASHIMOTO'S, HYPOTHYROIDISM, GRAVES' AND POST-THYROIDECTOMY Tell the app your condition and current medication, and everything adapts — what it flags, what it suggests, how it talks to you. YOUR DATA STAYS YOURS Your labs, symptoms, and notes are stored on your device, not on our servers. Export everything as a file whenever you want. Delete it all with one tap. No ads, no data selling, ever. FREE TO START Track symptoms, upload your first two labs, and see your interpretations at no cost. Premium unlocks unlimited uploads, Action Plans, trends, insights, doctor visit prep, and bulk import. IMPORTANT Thyroid Compass is a wellness tool, not a medical device. It does not diagnose, treat, or prevent any condition, and it is not a substitute for professional medical advice. AI-generated explanations are educational — always discuss your results and any health decisions with a qualified healthcare provider. Never start, stop, or change medication based on information from this app. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends. Manage or cancel anytime in your iPhone's Settings. Privacy Policy: https://dylanschob.github.io/thyroid-compass-legal/privacy.html Terms of Service: https://dylanschob.github.io/thyroid-compass-legal/terms.html

Screenshots

Lean4 screens
Thyroid Compass4 screens

Verdict

The call

The clearest difference is monetization model: Thyroid Compass at freemium against Lean's subscription. Thyroid Compass also leads on rating (5.0 vs 4.5). Lean's advantage is ratings volume (725 vs 1). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Lean sells 4 in-app purchases, starting at $9.99 per month and Thyroid Compass sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Thyroid Compass holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Lean has 725 ratings behind it against 1, so its average is the more settled of the two.

Scorecard3 real differences · 7 level
Lean versus Thyroid Compass: the parameters behind the verdict, then further details
ParameterLeanThyroid Compass
PriceFreeFree
Rating4.5 (725 ratings)5.0 (1 ratings) — better
Positive reviews70.6% of reviews—
Number of ratings725 — better1
Update frequencyEvery 5 days—
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size823 MB49 MB
Age rating4+12+
DeveloperFranck BARRIEREDYLAN GREGORY SCHOB

Customer experience

Lean

All ratings342 ratings
Positive88.0%
Neutral3.2%
Negative8.8%
Written reviews51 reviews
Positive70.6%
Neutral17.6%
Negative11.8%

Thyroid Compass

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Lean

Subscriptions3
  • Lean - Abonnement Mensuel$9.991 Month
  • Lean - Abonnement Annuel7 Days trial$69.991 Year
  • Lean -Abonnement Annuel Offre14 Days trial$69.991 Year
One-time1
  • Pass à Vie$229.00
2 purchases

Thyroid Compass

Subscriptions2
  • Premium Monthly7 Days trial$9.991 Month
  • Premium Yearly7 Days trial$79.001 Year

Questions

Is Lean free?
Lean is free to download, with in-app purchases available.
Is Thyroid Compass free?
Thyroid Compass is free to download, with in-app purchases available.
Which has better reviews, Lean or Thyroid Compass?
Thyroid Compass is rated higher. Lean averages 4.5 out of 5 from 725 ratings, while Thyroid Compass averages 5.0 from 1 ratings.
Do Lean or Thyroid Compass have ads?
Neither Lean nor Thyroid Compass shows ads.

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