Medida Certa: BMI & Body Fat

Medida Certa: calculate your BMI and body fat % using 5 different methods, and track your progress over time — no sign-up, no internet, no hassle.

QUICK CALCULATORS
• BMI (Body Mass Index)
• US Navy Method (tape measure only)
• RFM — Relative Fat Mass (modern method validated by Cedars-Sinai)
• Jackson & Pollock 3-site (caliper, quick)
• Jackson & Pollock 7-site (caliper, gold standard)

Every result comes with the ideal range for your age and sex, a clear classification (below ideal, normal, overweight, etc.), and an illustrated guide showing exactly where to measure.

PROGRESS TRACKING
Add one or more people (yourself, family, your personal-training clients) and log weight and measurements whenever you want. The app automatically calculates every formula it has enough data for.
• Weight and body fat % progress charts
• Detailed progress for each individual measurement (waist, skinfolds, etc.)
• Set weight and/or body fat % goals — the app celebrates with you when you hit them
• Reminders so you never forget to re-measure

NO ACCOUNT, NO CLOUD
All your data stays on your device only. No login, no account, no internet required. Export a .json backup whenever you like, or generate CSV/PDF reports to bring to your doctor or nutritionist.

MORE DETAILS
• English and Portuguese, switchable in Settings
• Light, dark, or automatic theme
• Share your results and progress as an image or PDF
• Free, with an optional one-time purchase to remove ads

Calculations are estimates based on widely used scientific formulas and don't replace a professional evaluation from a doctor, dietitian, or fitness professional.