Composition
↗Body fat and lean mass from body circumferences.
BODY METRICS · PRIVACY FIRST
Your body,
translated into useful numbers.
Simple + advancedClinical safeguardsLocal-only data
Estimate body fat, lean mass, metabolism and activity through one clear flow. Everything happens on this device, with no account and no measurements sent anywhere.
Enter my details privately See the methodENTER DETAILS · PAY TO UNLOCK ONE REPORT · NO ACCOUNT
01 Local processing02 Public sources03 Diabetes safeguards
THEIMETRA / BODY MODEL LOCKED REPORT
BODY ESTIMATELOCKEDAvailable in the paid report
ENERGYLOCKEDAvailable in the paid report
ACTIVITYLOCKEDAvailable in the paid report
HOW TO MEASURE
Keep the tape level after a natural exhale, without compressing the skin.
Energy
↗Metabolism, maintenance and goal estimates with explicit limits.
Activity
↗Sport, intensity, distance, steps and muscle groups.
01 Measure02 Describe03 Review
01 — YOUR PROFILE
Start with repeatable measurements
No result is a diagnosis. Use recent measurements and take each one twice.
REQUIRED DATA0%
Activities are optional and are added separately.
Same conditions
Measure at roughly the same time, preferably before eating and after using the bathroom.
Level tape
Keep it snug without compressing the skin, and breathe normally.
Two readings
Repeat each circumference; if the readings differ substantially, take a third.
Enter every detail first. Your personal results remain locked.
Measurements and health answers stay in this tab. They are never sent to THEIMETRA Control, Revolut or the licensing service.
HOW IT WORKS
Every number shows its limits
Composition
A circumference method provides a rough estimate of body fat and lean mass. Hydration, technique and fat distribution can alter it.
Energy & activity
Mifflin–St Jeor estimates resting needs, while METs estimate individual activities. Net extra energy is averaged across the week to reduce double counting.
Conditions & meals
Selected conditions activate adaptations or disable higher-risk calculations. The model does not prescribe medication, supplements, sodium, fluids or therapeutic carbohydrate amounts.
FREQUENTLY ASKED QUESTIONS
Before you trust a number
The most important answers about how THEIMETRA works and where its limits lie.
How accurate is the body-fat percentage?+
It is a circumference-based estimate, most useful for following a trend. Technique, hydration and fat distribution can change the result.
Why are calories shown as an estimate?+
The equations describe a statistical average. Real needs are calibrated by observing weight, hunger, energy and performance for at least two or three weeks.
Is my data saved?+
No. Values stay in the app’s temporary memory and disappear when the session is reset or the app is closed. Do not send measurements or health data to the contact address.
Can I use it if I have diabetes?+
You can receive general information with added safeguards, but medication, insulin and therapeutic carbohydrate amounts must be managed with your healthcare team.
What happens when I select a condition?+
Higher-risk conditions make calorie, macronutrient or body-composition estimates unavailable when weight and formulas may be misleading. Other conditions display documented cautions only; the app never diagnoses disease.
BEFORE CHANGING YOUR DIET
Get professional help when nutrition interacts with treatment.
Contact your healthcare team promptly for frequent hypoglycaemia, very high glucose, ketones, unintentional weight loss, persistent vomiting, sudden swelling, shortness of breath, confusion, vomiting blood or black stools. In an emergency, call your local emergency services.
Medication, insulin, sodium, fluids, therapeutic protein intake and supplements must be defined with professionals who know your diagnosis, tests and treatment.
PRIVACY & TERMS
Clear information, minimal data
Temporary memory only
Your entries stay in this session’s memory. THEIMETRA creates no member account, history, analytics profile or health record. Technical licensing checks contain no assessment values.
Not healthcare
An informational tool for adults. It does not diagnose, prescribe or create therapeutic diets. Medical conditions, pregnancy, eating disorders or treatment require a qualified professional.
No registration
Your purchase unlocks one analysis without a THEIMETRA account. Payment records contain no measurements. Save the final report locally before clearing this session.
IMPORTANT DISCLAIMER
Educational estimates, not personalised clinical advice.
THEIMETRA is designed solely as an informational tool for adults. Results depend on the data entered, statistical equations and MET estimates. They may be inaccurate and do not constitute a diagnosis, prescription, treatment, medical certification or therapeutic diet.
- Do not change medication, insulin, calorie intake or therapeutic carbohydrate amounts solely because of a result.
- Diabetes, pregnancy, kidney disease, eating disorders, symptoms or clinical goals require a doctor or registered dietitian.
- For severe symptoms or an emergency, contact your local emergency services immediately.
To the maximum extent permitted by applicable law, the service is not liable for health or dietary decisions made in sole reliance on these estimates. Nothing here excludes liability that cannot legally be excluded or limits mandatory consumer rights.