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Now in Beta

Your fitness data is
finally talking to itself.

Metron connects your sleep, recovery, training, and nutrition into one system that adapts every single day. No generic plans. No manual tweaking.

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HRV 44 up 12%
Plan adjusted 2:03am
Recovery 64%
Good morning, Ben
Saturday, January 18
Recovery Score 64
🛏 5.2h ❤️ 44 HRV 💤 62 RHR
Today's Workout ⚡ Adjusted 2:03am
Lower Body
Was: 5×5 @ 85% → Now: 4×6 @ 70%
🏋️ Squat 4×6 @ 220
🏋️ RDL 3×10 @ 185
🏋️ Leg Press 3×12
Start Workout
0 Integrations
0 Workouts per plan
0 Adaptation timeframes
0 To build your plan
The problem

You're tracking
everything.
Nothing's
connected.

Your calorie counter doesn't know you went on a two hour run yesterday and only slept four hours last night.

The solution

One AI that reads all of it. And acts on it overnight.

Metron pulls your sleep, recovery, training, and nutrition into a single model, then rewrites your plan every night based on what your data actually says. No manual input. No guesswork. Just a plan that adapts before your alarm goes off.

Three engines. One system.

01 Personalized Plan Engine

90 minutes. Eight AI phases. One plan covering training, nutrition, supplements, recovery, sleep, cardio, and body composition. Built from YOUR actual data.

  • Syncs your wearables before generating
  • Eight-phase build with adversarial self-critique
  • 15 to 25 custom rules for your vulnerabilities
Building Your Plan
Phase 5 of Eight · ~18 min remaining
🔬
Adversarial Review
✓ Deep Research
✓ 7 Pillars Framework
✓ 72 Workouts Built
● Self-Critique Pass
○ Failure Rules
Adaptation Log ● Live
📅 Monthly: Deload week scheduled
📆 Weekly: Volume reduced 10%
🌙 Daily: Intensity → 70%
⚡ Hourly: Monitoring RPE
A
Arete
Why does my bench stall at 225?
Found it. Your 6 attempts at 225: you only hit it when readiness was 81+. Average on failed days: 67. You're strong enough, just always tired when you try it.

Connects with everything you already use

Apple HealthApple Health
WhoopWhoop
OuraOura
GarminGarmin
FitbitFitbit
StravaStrava
TrainingPeaksTrainingPeaks
MyFitnessPalMyFitnessPal
Eight SleepEight Sleep
PelotonPeloton
FitbodFitbod
WithingsWithings
InstacartInstacart
GrubhubGrubhub
Apple HealthApple Health
WhoopWhoop
OuraOura
GarminGarmin
FitbitFitbit
StravaStrava
TrainingPeaksTrainingPeaks
MyFitnessPalMyFitnessPal
Eight SleepEight Sleep
PelotonPeloton
FitbodFitbod
WithingsWithings
InstacartInstacart
GrubhubGrubhub

From zero to your plan in one day.

01
15 minutes

Tell us about yourself

Complete a detailed questionnaire covering your body, goals, injuries, schedule, and preferences. This becomes the foundation of everything.

02
90 minutes

Metron builds your plan

72 workouts. Nutrition targets. Supplement stack. Recovery protocols. All integrated, all personalized, while you do something else.

03
Every night after

It never stops learning

Every night it reads your data and adjusts tomorrow. The longer you use it, the more precisely it knows exactly what you need.

The Metron Advantage

Metron Standard LLMs In-Person Trainers Generic Fitness Apps
Reads your wearable data ✓ ✕ ~ sometimes ~ limited
Adapts your plan daily ✓ automatically ✕ ~ manually ✕
Covers training + nutrition + recovery ✓ all 7 pillars ~ generic advice ~ training only ~ one pillar
Remembers your full history ✓ ✕ forgets each session ~ if they take notes ✕
Available 24/7 ✓ ✓ ✕ ✓
Cost Free (beta) $20/mo $100 to $300/mo $5 to $15/mo

Built for people who take training seriously.

"I've tried every fitness app out there. Metron is the first one that actually feels like it knows me. It adjusted my training the morning after a bad night of sleep before I even opened it."

James R. — Competitive powerlifter
Limited beta access

Stop Guessing.
Start Adapting.

Free during beta. Lock in $6.99/month for life when we launch.

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✓
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FAQs

A standard AI model can't see your data. Metron connects directly to your wearables and training logs, then analyzes your actual sleep, HRV, and workout history. When you ask "should I train today?", you get an answer based on YOUR recovery state, not generic advice.
It doesn't default to easy. When you're ready to push, it tells you to push harder. Last month, 23% of adjustments INCREASED intensity because users were under-training relative to their recovery. You can also override any adjustment.
That's plenty. Apple Watch tracks sleep, heart rate, and workouts. The system works with one device. More devices = richer insights, but one is enough to start.
Yes, currently iOS only. Android is on our roadmap. Sign up and we'll notify you when Android launches.
Yes. Your data is encrypted, never sold, and never shared with external AI models. You can export or delete everything at any time. We make money from subscriptions, not your data.
Metron provides insights based on your data, not medical advice. It's designed to help you understand patterns and make informed decisions. For injuries or medical concerns, always consult a healthcare professional.