Your AI fitness coach adapts to your real data. No other app does that.
The fitness coach built for your actual life. On Ozempic? Postpartum? Managing an injury? Cancer survivor? Over 40? Every other fitness app pretends you're 25 and healthy. Body by AI Coach is built for the real you — with code-level contraindication enforcement and 228 peer-reviewed citations.
21-day free trial. No credit card required.
Real results. Real person. 23% → 11.2% body fat.
Individual results not typical. Results depend on adherence, starting point, and individual factors.
23% → 11.2% body fat. 7 months. Age 52. DEXA verified.
Jason Hull — West Point grad, Army veteran. Built this to prove it first.
Results not typical. Individual results vary.
Sound Familiar?
You've started over more times than you can count.
Not because you lack willpower. Because every plan assumes a perfect week. Life isn't perfect. Your coach should adapt — not reset.
You're losing weight. But are you losing the right weight?
GLP-1 medications work. But without the right training and protein strategy, up to 40% of what you lose can be muscle. That's not a transformation — that's a problem.
Generic plans don't know your injuries, your schedule, or your medications.
A 22-year-old's program wasn't designed for your disc problem, your beta blocker, or the week your kid got sick. Yours should be built around your actual life.
On Ozempic or Wegovy?
Your medication is working. Now make sure what you're losing is fat — not muscle.
Body by AI Coach is built for exactly this. Protein targets calibrated to preserve lean mass, training programs that protect muscle during weight loss, and coaching that adapts as your appetite changes.
See How It WorksHere's What Changes
Your coach prepares a personalized check-in every morning, ready when you open the app.
A real assessment of how you slept, how you feel, and how sore you are, so your entire day adjusts automatically.
Morning Check-In
How did you sleep? Rate your energy and soreness. Your plan adjusts automatically.
App preview coming soonWorkouts built for TODAY.
Based on your recovery, your equipment, your time, and your actual progress. Not a template.
Today's Workout
Bench Press 185 lbs × 4 sets. Reduced 5% — your HRV was low this morning.
App preview coming soonMeals planned around your training.
Around your budget, and what's actually in your fridge. Macros calculated. Grocery list generated.
Meal Plan
Today: 185g protein, 2,100 cal. Chicken + rice post-workout. Shopping list ready.
App preview coming soonThe system behind the book
24+
Data points tracked daily
370K+
Foods in database
4
Wearable integrations
19
Codified science formulas
Real Results. Real Data.
Jason built Body by AI Coach to coach himself — and it worked for him. At 52, he went from 23% to 11.2% body fat in 7 months using the same AI system you're looking at right now. Results vary.
Before
June 2025 · 23% body fat
After
January 2026 · 11.2% body fat
23% → 11.2% body fat. 7 months. Age 52. No guesswork — AI-coached nutrition and progressive training, every day.
Jason used the same app you're signing up for. The system was built around his own data, then opened to everyone.
Results not typical. Individual results vary.
What Makes BBA Different
Works with your wearable
Your Apple Watch, Garmin, Strava, or Google Health Connect data feeds directly into your coaching. Real HRV and resting heart rate drive deload decisions. Active calories calculate your true TDEE — no generic activity multipliers.
Start your transformation in 3 steps
Onboard in minutes
Tell us about your goals, fitness level, and health. You'll be up and running in minutes.
Follow your plan
Get daily workouts with exact weights. Log meals. Do your morning check-in. Your wearable syncs automatically.
Watch yourself transform
Track progress with real data. Your coach keeps getting smarter, managing phase transitions and adjustments automatically.
Your Coach Gets Smarter Over Time
Most fitness apps give you the same experience on day 100 that they gave you on day 1. Body by AI is different. Your coach learns from every meal you log, every workout you complete, every weigh-in. By week 4, your targets are based on YOUR metabolism — not a formula. By week 8, your coach can tell you things about your body that no calculator ever could.
Week 1-2: Free Trial
Initial formula (generic)
Week 3-4: Calibrating
Learning your patterns
Week 5-8: Dialed In
Your metabolism, your targets
Simple, transparent pricing
Unlimited AI coaching. No interaction limits. No counting. No anxiety.
Standard
Your AI-powered fitness coach
- Unlimited AI coaching conversations
- Personalized workout programming
- Complete nutrition tracking
- Wearable integration
- Progress tracking
- Phase management
- Data export (JSON/CSV)
Pro
Complete coaching + meal planning
- Everything in Standard
- Photo-based meal estimation
- Training-integrated weekly meal plans
- Family meal planning
- Budget-aware grocery lists
- Instacart grocery delivery link (coming soon)
- DEXA integration & calibration
- Advanced body composition analysis
- Priority AI response time
All new users: 21-day free trial. Book buyers: redeem your code for 30 days free.
No contracts. Cancel anytime. Your data exports with you.
Compare plans in detailCommon Questions
Do I need the book?
No. Everyone gets a 21-day free trial to start. Book readers get 30 days free and arrive with structured data that instantly personalizes their experience. Get the book on Amazon.
Is my data safe?
Encrypted at rest and in transit. Row-level security. Never sold. Full export or deletion on request.
What devices are supported?
Apple Health, Garmin, Strava, Google Health Connect. More coming. Works with manual entry too.
How is this different from MyFitnessPal?
MFP is a food diary. Body by AI Coach is a complete AI coach — personalized workouts with your exact weights, nutrition planning, progress analysis, phase management, and a coach that remembers everything about you forever.
Ready to stop guessing?
Your AI coach is waiting. 21 days free — no credit card required.
Start Your Trial