Everything Your Coach Knows. Everything Your Tracker Can't Do.
No gimmicks. No vanity metrics. Every feature exists because the book demands it and the science supports it. Here is exactly what you get.
Unlimited AI Coaching
Your AI coach is available 24/7 with unlimited conversations
No interaction limits. No counting messages. No anxiety about "wasting" a question. Ask anything, anytime — from "can I eat this?" to "redesign my training split for my vacation schedule." Your coach responds with your complete history in mind.
Remembers Everything
Every workout, every meal, every weigh-in, every conversation you have ever had. Your AI coach knows your injury history, your medications, your menstrual cycle, your food preferences, and your goals. It never forgets. It never asks you to repeat yourself.
4 Persona Tones
Choose your coaching style: Drill Sergeant, Science Nerd, Supportive Coach, Stoic Mentor, or Training Partner. Or describe your own with Custom. Switch anytime.
Emotional Awareness
Your coach reads between the lines. Frustrated after a bad weigh-in? It adjusts its tone. Celebrating a PR? It celebrates with you. Struggling at week 8 of a cut? It knows exactly what to say.
Pattern Learning
Over time, your coach learns what motivates you, when you tend to skip sessions, and how your body responds to different stimuli. It gets smarter the more you use it.
Smart Workouts
Every workout arrives with YOUR prescribed weights
The system tracks every set, every rep, and every weight across every exercise. When you are ready to progress, it recommends the next weight — but only after checking your recent recovery, sleep, injuries, and medications. It knows about your movement restrictions, so it will never prescribe contraindicated exercises. It adapts every recommendation to your specific health context.
Recovery-Aware Delivery
Every workout goes through an AI safety check before delivery. If your HRV crashed or you only slept 4 hours, today's workout gets modified before you even ask.
Progressive Overload
Percentage-based loading calculated from your history. The AI sanity-checks against injuries, recovery state, and training phase before recommending progression.
Auto-Deload Protocols
The AI interprets WHY triggers fired — overtraining vs illness vs new medication vs stress — not just that they fired. Smart deloads, not blind rules.
VO2 Max Protocol
Dedicated cardiovascular programming with target heart rate zones, interval structures, and progressive aerobic base building.
Exercise Library
48+ exercises with proper form cues, muscle group targeting, and smart substitutions when equipment is unavailable or contraindicated.
Rest Timers
Built-in rest period timers calibrated to your training goal: shorter for hypertrophy, longer for strength. Never cut rest short or waste time again.
Nutrition Tracking
Hit your macros without a nutrition degree
Logging food should take seconds, not minutes. Search 370,000+ foods, snap a photo for instant macro estimates, or re-log your favorites with one tap.
USDA Food Database
370,000+ verified foods with accurate macro breakdowns. Search by name or browse by category (barcode scanning coming soon).
Photo-Based Estimation
Coming SoonSnap a photo of your plate. AI identifies the foods, estimates portions, and logs macros automatically. Perfect for meals out or when you are in a rush.
Frequent Foods
Your most-logged foods surface automatically. One tap to re-log yesterday's breakfast or your go-to post-workout shake.
Per-Macro TEF Targets
Macro targets account for the thermic effect of each macronutrient. Protein, carbs, and fats each have different metabolic costs -- your targets reflect that.
"Solve for X" Final Meal
Coming SoonYou have 400 calories and specific macro targets left for the day. The system builds your final meal to hit those numbers precisely.
Meal Planning (Pro)
ProMeal plans that know your training schedule
This is what no other app does. Your AI coach already knows your training schedule — Monday is heavy legs, Wednesday is rest, Friday is VO2 max. Each day gets different nutrition. Heavy training days get more carbs for fuel. Rest days shift to higher fat. Your weekly meal plan is built around YOUR workouts, YOUR family, YOUR budget, and YOUR kitchen skills.
Training-Day Nutrition
Heavy leg day gets 200g carbs for fuel. Rest day shifts to 130g carbs and more fat. VO2 max day gets easily digestible pre-workout carbs. Every day is different because every day IS different.
Family Meal Planning
Coming SoonTell us about your household — partner, kids, ages, restrictions. We generate ONE dinner recipe that hits YOUR macros while being appropriate for everyone. Portioned differently per person. Kid-friendly flagging.
Budget-Aware Grocery Lists
Coming SoonSet your weekly budget. Tell us where you shop. We optimize for cost — seasonal produce, bulk buying, cross-meal ingredient efficiency, and store-brand substitutions where quality is equal.
Batch Cooking Mode
Coming SoonInput: "I have 3 hours Sunday to cook for the week." Output: timed prep plan, storage instructions, reheating instructions, and which meals share base ingredients.
Recipe Generation
Coming SoonRecipes tailored to your cooking skill, time available, and equipment. Every recipe has multiple portion calculations built in. Accepts and learns from your feedback.
Grocery Delivery Link
Coming SoonYour customized grocery list links directly to Instacart. Review, adjust, and submit. Groceries delivered to your door. More delivery partners coming soon.
Progress & Body Comp
See through the noise to real trends
Daily weight fluctuations are meaningless. Exponential smoothing reveals the true trend beneath the noise, so you know whether your plan is actually working.
Weight Trend Analysis
Exponential smoothing cuts through daily fluctuations from water, sodium, and glycogen. See your true rate of loss or gain with confidence.
DEXA Scan Integration
Coming SoonImport your DEXA results to calibrate body composition estimates. Track lean mass and fat mass changes between scans with precision.
Body Fat Tracking
Multiple estimation methods that improve over time. Cross-reference Navy method, photos, and DEXA for the most accurate picture possible.
AI Progress Photo Analysis
Coming SoonUpload progress photos and get AI-powered analysis of visible changes in muscle definition, symmetry, and AI-estimated body composition (approximate wellness indicator) across timeframes.
Glycogen & Water Prediction
Coming SoonStarted creatine or increased carbs? The system predicts the water weight swing so you do not panic when the scale jumps 3 pounds overnight.
Wearable Integration
Your devices, one unified dashboard
Connect the wearables you already own. All data flows into a single normalized view so your coach can make decisions using every signal available.
Apple Watch & HealthKit
Automatic sync of heart rate, HRV, resting heart rate, steps, active calories, workouts, and sleep data from your Apple Watch.
Google Health Connect
Full integration with Android's Health Connect API. Same data, same experience, regardless of your phone platform.
Garmin Connect
Coming SoonDirect Garmin integration syncs activity, sleep, heart rate, stress scores, and body composition to your coaching automatically.
Compatible with Strava
Sync runs, rides, and other cardio sessions automatically. Your AI coach factors external training volume into recovery calculations.
Real-Time Recovery Signals
HRV, resting heart rate, and sleep quality combine into a recovery score that drives auto-deload decisions and training intensity adjustments.
Smart Learning
Gets cheaper and smarter over time
Most AI apps cost the same forever. Body by AI learns your patterns and caches coaching decisions, so AI calls decrease over time while quality increases.
Population-Level Patterns
Coming SoonAnonymized, aggregate insights from all users improve coaching recommendations. What works for people like you informs your plan -- without exposing anyone's data.
Per-User Coaching Cache
Your coach remembers how it handled similar situations before. Repeat questions get instant answers without burning an AI call.
Feedback Loops
Every coaching interaction has implicit and explicit feedback. Did you follow the advice? Did the outcome improve? The system tracks and adjusts.
Cost Optimization
As the system learns your patterns, more decisions move from expensive Sonnet calls to cheap Haiku calls to free programmatic logic. Your subscription gets more valuable over time.
Privacy & Security
Your data belongs to you. Period.
Enterprise-grade security is not optional -- it is the foundation. Row-level security on every table, encrypted storage, and complete data portability.
Row-Level Security
Every database table has RLS policies enforced at the database level. Even if application code has a bug, the database will not serve another user's data.
Full Data Export
Export everything -- workouts, meals, measurements, coaching history -- in JSON or CSV format. Your data is never held hostage.
No Data Selling
We will never sell your personal data. Not to advertisers, not to data brokers, not to anyone. Our revenue comes from subscriptions, not surveillance.
Private Photo Storage
Progress photos and DEXA scans are stored in private buckets with time-limited signed URLs. No public links, no leaks.
Enterprise-Grade Infrastructure
Built on Supabase (PostgreSQL), deployed on Vercel, with encryption at rest and in transit. The same infrastructure trusted by thousands of production apps.
370K+
Foods in database
48+
Exercises
7
Wearable integrations
100%
Data portability
Your coach doesn't have abs.
Personal trainers are intimidating. They're fit, they're muscular, and they've already figured it out.
Your AI coach doesn't have a body. It doesn't judge. It doesn't care if you start with 5-pound dumbbells or 50-pound dumbbells. It doesn't care how you look in the gym, what you weigh, or how long it's been since you last worked out.
No judgment.
No comparison.
No ego.
Just evidence-based coaching that meets you exactly where you are.
Ready to put the book into practice?
Start your 21-day free trial today. Book buyers get an extended 30 days free with their promo code.