Metrics How It Works Science Story Details Pre-Order Now

Strength training,
finally measurable.

The first wearable built to track your strength. Automatically.
Reps, sets, effort, and progress.
All in one device built for longevity.

Backed by Y Combinator Ships Q3 2026
Fort wearable device

Know if your training is working.

Fort session score showing 81 points for Leg Day

Know if your training is working.

Fort gives you the feedback strength training has never had. Your sessions, fully decoded. No manual logging required.

Session Score

Fort's at-a-glance metric for how intense and productive your training session was. Calculated from your exercises, sets, reps, velocity, rest times, heart rate, and training goals.

Per-Muscle Breakdown

See whether each muscle group got maintenance, growth, or overload — every session.

Proximity to Failure

See how hard you pushed on every set. Fort analyzes changes in your velocity and movement patterns to learn how you move as you fatigue.

Pacing

Time under tension, rest times, and rep cadence tracked automatically — so you can structure your training to match your goals.

Weekly Progress

See if you're building strength, maintaining, or plateauing — week over week.

Strength metrics

Your wearable saw a heart rate spike. Fort saw a squat PR.

50+ exercises recognized

From barbell compounds to cable accessories. Fort knows what you're doing before you tell it.

Rep-by-rep precision

Velocity, range of motion, and effort extracted from every rep. Automatically.

No logging required

Slip it on. Lift. Fort handles the rest.

The signal science

Movement kinematics and heart rate fused to model true muscular effort and proximity to failure. Per set, automatically.

Sleep metrics
Cardio metrics
Stress metrics

Strength is built around the clock.

Unlock a complete picture of your health.

Full sleep stage tracking

Deep, light, and REM measured every night.

Recovery scoring

Wake up knowing whether to push or rest.

Overnight HRV trends

See how your body restores while you sleep.

Continuous heart rate zones

Train in the right zone, every session.

VO₂ max estimation

Track aerobic fitness improvements week over week.

All-day activity tracking

Steps, calories, and movement. Tracked automatically.

Real-time stress detection

HRV patterns reveal your nervous system state throughout the day.

Pattern recognition

See how work, travel, and training affect your recovery.

Early stress warnings

Catch compounding stress before it affects your training.

Pre-Order — $289

Built by a team of Tesla engineers
who love strength training.

Watch Fort's story

Backed by

Y Combinator Afore Carnegie Mellon University Weekend Fund Theory Forge

Plus angels from OpenAI, Tesla, and more.

Currently in beta with founding members. We're building Fort with real people, real workouts, and real feedback.

Person training with Fort wearable

Fort works as hard as you do. All day.

Wear

Under 30g. 7-day battery. Straps to match your style. All day, all night.

Understand

Every rep, set, and rest period quantified automatically. No logging. No guessing.

Progress

Session score, muscle balance, and weekly trends. Week over week, month over month.

Be among the first.

Join our founding members. Ships Q3 2026. Fully refundable, anytime.

$289 Pre-order
$349 Retail
  • Fort wearable band
  • One year of Fort Premium analytics
  • Beta testing & early feature access
  • Fully refundable at any time
  • Lifetime firmware updates

Have questions? Reach out at founders@fort.cx