Track Your Fitness
Transformation
Upload your before and after photos for AI-powered body composition analysis. Detect measurable changes in shoulder width, waist, V-taper, and more. All in your browser, completely private.
Fitness Royale helps you track your body transformation with objective, measurable data — not just how you feel in the mirror. Our AI analyzes your physique changes using computer vision, detecting improvements in shoulder width, waist reduction, v-taper ratio, and more.
Powerful Herramientas
Calculators, trackers, and AI assistants to support your fitness journey
AI Body Analysis
Compare before and after photos. Detect 33 body landmarks, measure V-taper, waist, and shoulder changes.
→AI Fitness Trainer
Chat with a private AI coach that runs on your device. Get answers about training, nutrition, and recovery.
→TDEE Calculator
Calculate your total daily energy expenditure. Plan cuts, maintenance, and bulks with precision.
→BMI Calculator
Quick body mass index assessment using WHO and modern reference ranges for adults and athletes.
→Body Fat Calculator
Estimate body fat percentage with the US Navy method. Track recomposition progress over time.
→One-Rep Max
Estimate your 1RM from any rep range. Built on Epley, Brzycki, and Lombardi formulas.
→Protein Calculator
Find your optimal daily protein intake based on ISSN guidelines for muscle gain or fat loss.
→Macro Calculator
Plan your daily macronutrients. Set protein, carb, and fat targets based on your goals.
→Height & Weight Chart
View healthy weight ranges by height, age, and frame. Includes BMI, ideal weight, and ranges.
→Antes
Arrastra tu foto de antes aquí o haz clic para buscar
Foto de cuerpo completo con buena iluminaciónDespués
Arrastra tu foto de después aquí o haz clic para buscar
Misma pose e iluminación para mejores resultadosHow It Works
Three simple steps to track your progress with measurable, objective data
Subir Fotos
Toma una foto de antes y después con la misma pose e iluminación para la comparación más precisa.
Análisis IA
Nuestra IA detecta 33 puntos corporales y mide relaciones clave como hombro-cintura y cintura-altura.
Obtener Resultados
Recibe un informe detallado con cambios medibles y consejos prácticos sobre tu progreso.
Why Fitness Royale
Built by certified professionals with a privacy-first approach
Evidence-Based
Every metric and recommendation is grounded in peer-reviewed exercise science and sports nutrition research.
Private by Design
Photos are never stored. The AI trainer runs in your browser. No data leaves your device unless you choose to upload.
Completely Free
All core features — body analysis, calculators, AI trainer, workout logs — are free. No hidden paywalls.
Built for Everyone
Whether you are a beginner or an advanced athlete, our tools scale to your needs with evidence-based recommendations.
Meet Our Expert Team
All content is created and reviewed by certified fitness and nutrition professionals.
Alex Chen, CSCS
Head of Training Content
NSCA-Certified Strength & Conditioning Specialist. 12+ years coaching athletes at the Division I level.
View profile →Dr. Sarah Mitchell, PhD, RD
Nutrition & Body Composition Editor
Registered Dietitian. PhD in Sports Nutrition from Cornell. 10+ years in clinical nutrition research.
View profile →Marcus Rivera, CPT
Fitness & Equipment Specialist
NASM-Certified Personal Trainer. 8+ years coaching beginners and reviewing fitness equipment.
View profile →What Users Say
Real feedback from people using Fitness Royale to track their progress
“The AI analysis caught waist changes I could barely see in the mirror. Seeing those numbers was incredibly motivating.”
“I love that my photos stay on my device. The V-taper measurement helped me realize my shoulders were actually growing even when the scale didn't move.”
“The calculators and blog articles are actually based on real science. I finally found a fitness site that isn't pushing supplements or bro-science.”
Latest from Our Blog
Evidence-based guides on training, nutrition, and body composition
How to Start Working Out
Complete beginner's guide to the gym: equipment, exercises, sets, reps, nutrition, and tracking your progress.
Calorie Deficit Guide
How to lose fat without starving: calculate your deficit, set macros, preserve muscle, and lose weight sustainably.
Best Exercises by Muscle Group
Evidence-based exercise selection for chest, back, shoulders, arms, legs, and core ranked by EMG activation.
Frequently Asked Questions
Everything you need to know about privacy, accuracy, and how the analysis works
¿Se almacenan o guardan mis fotos?
No. Las imágenes se procesan completamente en memoria y se eliminan inmediatamente después del análisis. Nunca almacenamos ni guardamos tus fotos.
¿Qué tan preciso es el análisis?
La IA usa MediaPipe Pose Landmarker para detectar 33 puntos corporales con alta precisión. Las métricas se calculan a partir de estos puntos. Los resultados dependen de la calidad de la foto, iluminación y consistencia entre tomas.
¿Qué tipo de fotos funcionan mejor?
Fotos de cuerpo completo con buena iluminación, ropa mínima y una pose consistente entre tomas dan los resultados más precisos. Las fotos de frente funcionan mejor.
¿Esto es realmente gratis?
Sí, completamente gratis. El sitio se mantiene con anuncios para que sea accesible para todos.
What metrics does the AI measure?
The AI detects 33 body landmarks and computes: V-taper ratio (shoulder-to-waist), waist change, shoulder width change, arm fullness change, waist-to-height ratio, and shoulder-to-height ratio. Each metric is shown as a percentage change.
Do I need an account to use the tools?
No. All calculators, the AI trainer, and the body analysis tool work without an account. A free account is only needed if you want to sync your workout and measurement data across devices.
Can I use this on my phone?
Yes, the site is fully responsive and works on mobile phones and tablets. Photos taken with your phone camera work well as long as lighting and pose are consistent.
What is the AI Fitness Trainer?
The AI Fitness Trainer is a free chatbot that runs entirely in your browser using WebAssembly. It answers questions about workouts, nutrition, body composition, and using our tools. Nothing you type leaves your device.
See your progress in numbers
Upload your before and after photos and get an objective, measurable analysis of your transformation in under 30 seconds.
Más Herramientas Fitness
Fitness Level Quiz
Discover your fitness level in 2 minutes. Get a personalized score, training plan, and daily targets.
Take the Quiz →Calculadora de Repetición Máxima
Estima tu 1RM para cualquier ejercicio según el peso y repeticiones que puedas realizar.
Calcular 1RM →Calculadora TDEE
Calcula tus necesidades calóricas diarias y obtén recomendaciones personalizadas de macronutrientes.
Calcular TDEE →Calculadora IMC
Revisa tu Índice de Masa Corporal y mira en qué categoría de peso estás.
Calcular IMC →Calculadora de Proteínas
Encuentra tu ingesta óptima diaria de proteína según tu peso y objetivos fitness.
Calcular Proteína →Calculadora de Grasa Corporal
Estima tu porcentaje de grasa corporal usando el método de circunferencia Navy.
Calcular Grasa Corporal →Calculadora de Sueño
Encuentra las mejores horas para dormir basadas en ciclos de sueño de 90 minutos.
Optimizar Sueño →Water Intake Tracker
Track daily water intake with personalized goals and visual progress ring.
Track Water →Exercise Library
Search 50+ exercises with form tips and common mistakes for every muscle group.
Browse Exercises →Strength Standards
Compare your lifts against bodyweight standards. Find your level from beginner to elite.
Check Your Level →Training Programs
Free and Gold programs: Starting Strength, 5x5, PPL, advanced bodybuilding splits.
View Programs →Fitness Challenges
30-day challenges with streaks. Push-ups, squats, planks, and pull-ups.
Start a Challenge →Habit Tracker
Track daily wellness habits with streaks. Meditation, reading, stretching, and more.
Build Habits →Visual Body Fat Estimator
Estimate your body fat with reference descriptions, then confirm with Navy method measurements.
Estimate Body Fat →Calculadora de Calorías
Calcula tus necesidades calóricas diarias para mantener, perder o ganar peso.
Calcular Calorías →Calculadora de Macros
Obtén objetivos personalizados de proteínas, carbohidratos y grasas.
Calcular Macros →Línea de Tiempo de Fotos
Almacena fotos de progreso en tu navegador y míralas en una línea de tiempo.
Ver Línea de Tiempo →Registro de Medidas
Registra medidas corporales y mira gráficos de tendencia a lo largo del tiempo.
Registrar Medidas →Calculadora de Peso Ideal
Encuentra tu peso corporal ideal según altura, sexo y complexión.
Calcular Peso Ideal →Height & Weight Chart
Reference height-weight tables for men and women by age. See healthy ranges at a glance.
View Chart →Registro de Entrenos
Sigue tus ejercicios, series, repeticiones y pesos a lo largo del tiempo.
Registrar Entreno →