feature AI BODY ASSESSMENT
See What theScale Can't.
Estimate your body fat, understand fat and lean mass, see where fat may be concentrated, and compare how your body changes over time—from two guided photos or manual measurements.
● Know your body better than others
ai meal logging
What is SlimAI Body Assessment?
Works with
based on published formulas
the problem why it matters
Why Weight Isn't Enough
The scale hides progress
You can lose fat and gain muscle while your weight stays nearly the same.
BMI can [object Object] be misleading
BMI does not account for muscle, age, or body composition.
Lab tests are costly
DEXA scans and clinical tests are expensive and not always convenient.
The scale hides progress
Where fat is stored—especially around the abdomen—can affect your health.
Motivation fades
Without visible progress, it is easy to lose motivation.
how it helps you
Lose Fat
Understand your body and burn fat more effectively.
Build Muscle
Track lean mass and support muscle growth.
Maintain Weight
Stay in your ideal range with better body goals.
how it works
How AI Body Assessment Works
In 5 Easy Steps
Get Ready
- Wear fitted clothing
- Bare feet
- Hair tied back
- Position your phone near waist height
Capture or Enter
Take two guided photos OR Manually enter six tape measurements for different mentioned parts of body
AI Estimates Measurements
AI identifies six key body measurements, estimated from your photos or manual input — whichever you chose.
Validated Formulas Calculate Results
Published formulas calculate your body composition and distribution.
Review & Track
Review results, edit if needed, and monitor changes over time.
Science-Backed. Honest Ranges. Actionable Insights.
The Science
Built On Peer-Reviewed, Validated Formulas
The AI never invents a body-fat number on its own. Its only job is to read six body measurements from your photos — neck, chest, upper arm, abdomen, hips, and thigh. The final estimate always comes from published, validated formulas. SlimAI runs several, cross-checks them, and blends them with a weighted ensemble. When formulas disagree, the app widens the shown range and lowers confidence rather than faking certainty.
| Method | Source | What it contributes |
|---|---|---|
| US Navy circumference method | Hodgdon & Beckett, 1984 | Body fat from neck, waist, and hip circumferences — used by the US military for decades. |
| RFM (Relative Fat Mass) | Woolcott & Bergman, Scientific Reports, 2018 | Modern waist-and-height formula validated against DEXA. |
| CUN-BAE | Gómez-Ambrosi et al., 2012 | Clinically validated body-fat estimator from BMI, age, and sex. |
| Waist-to-height & waist-to-hip ratios | WHO guidance | Fat-distribution context. |
| Fat distribution research | Karastergiou et al., 2012 | Basis for regional fat-storage insight. |
Every result is an estimate (about ±3–4 percentage points), shown as a likely range with a confidence rating — never a false-precision single number. An in-app Sources & References screen cites the research behind every formula. Not a medical diagnosis.
benefits you'll get
What More Your Body Fat Scan Reveals
Estimated Body Fat
See your estimated body-fat percentage with a likely range.
Fat Distribution
Understand where fat may be more concentrated.
Lean & Fat Mass
Know your lean mass and fat mass in kilograms.
Confidence Score
Results include a confidence rating with explanations.
Progress History
Compare scans and see how your body changes over time.
Privacy
Your Photos Are Yours
Stored privately in your account, never shared, and gone forever the moment you delete them.
Explicit consent first
The scan cannot start until you agree to AI processing and secure storage — a real checkbox, not buried terms.
Private by design
Photos are stored in your own private cloud space. Only you can see them.
Encrypted in transit
Photos travel over an encrypted connection for analysis.
Metadata stripped
Location and camera EXIF data are removed before anything is stored.
Deletion means deletion
Deleting a scan — or your account — permanently removes its photos and data. Abandoned sessions are auto-cleaned within 48 hours.
A zero-photo option exists
Tape-measurement mode is labelled “Most private” — no photos are ever taken or uploaded.
continue your journey
Part Of The SlimAI Body Assessment Ecosystem
All features work together to help you reach your goals.
Your Assessment Connects To
Calorie & Macro Tracker
AI Meal Logging
Serving Size Guidance
Ingredients & Recipe Generated
Food Health Score
Progress Tracking
Each feature uses your assessment differently.
Personalized calorie and macro target
based on your body composition and body-fat estimate.
AI Meal Logging tracks meals
against your personalized calorie and nutrition goals created before
Adjust serving size or portions
based on your goal, body composition, and daily calorie budget.
Generate ingredients recipes, meals
that match your calorie target and nutrition needs.
Improve food health quality score
not just calories—to better support body composition goals.
Track progress overtime and See
how your body changes over time and compare future assessments.
Continue ExploringDiscover More Tools That Work With AI Meal Logging.
Macro Tracker
Understand protein, carbs, and fats after every meal.
Food Health Score
See food quality, not just only calories.
Serving Size Guidance
Get smart portion insights before or after you eat.
Water Tracker
Track your water intake and stay hydrated.
Progress Tracking
See your progress and stay motivated every day.
FAQ
Still Wondering About SlimAI
Two — a front view and a left-side view. A voice-guided camera walks you into position and captures each photo automatically. The whole scan takes about one minute.
No. The AI only reads six tape-style body measurements from your photos — neck, chest, upper arm, abdomen, hips, and thigh. Your estimated body fat percentage always comes from published, peer-reviewed formulas such as the US Navy circumference method, RFM, and CUN-BAE. If you correct any measurement, everything recalculates instantly.
It is an estimate with roughly ±3–4 percentage points of uncertainty, always shown as a likely range with a confidence rating — never a false-precision single number. If clothing or framing reduces accuracy, the app says so and offers a retake.
No. The Enter Measurements mode uses six tape measurements instead — no photos are ever taken or uploaded. It is labelled the most private option and produces the same results screen.
Photos are stored in your own private account space, encrypted in transit, stripped of location metadata, and visible only to you. Deleting a scan or your account permanently removes its photos and data.
Photo capture can be tried by anyone. AI analysis and unlimited scans are part of SlimAI Premium. Results feed the same app that plans your diet and tracks your food, weight, and exercise.
No. Body Assessment provides a science-based estimate for fitness purposes. It is not a medical diagnosis and does not replace clinical testing such as DEXA. It supports ages 18 to 100.
Start logging smarter
with AI Meal Logging.
Log any meal. Any way. Get instant nutrition.Build better habits.
