Your Body,
Fully Understood
Fort automatically tracks strength training for people who care about longevity.
Backed by Y Combinator
Ships Q3 2026
Fort automatically tracks strength training for people who care about longevity.
Most wearables ignore your hardest work. Fort tracks it all.
No logging, no tapping. Fort recognizes your movements in real time.
Every set, rep, and rest period captured with precision.
See at a glance how much meaningful training remains.
A complete picture of session demand, not just heart rate.
Train in the right zone, every session.
Track aerobic fitness improvements week over week.
Steps, calories, and movement — tracked automatically.
Deep, light, and REM measured every night.
Wake up knowing whether to push or rest.
See how your body restores while you sleep.
HRV patterns reveal your nervous system state throughout the day.
See how work, travel, and training affect your recovery.
Catch compounding stress before it affects your training.
Connect lab results directly to your training data.
Strength, conditioning, recovery, and biomarkers — one place.
How it works
Slip on Fort. Under 30g, 7-day battery, and straps to match your style. Wear it all day, all night.
Precision sensors capture strength, cardio, sleep, and recovery automatically.
See what's working, what needs rest, and where to push next.
Pre-Order Member“I was tired of my wearable giving me more strain for climbing stairs than for spending two hours lifting.”
Every metric is derived from continuous sensing and proprietary models.
Acceleration, rotation, and heart rate data are continuously sampled and classified into exercises, sets, and reps. No logging required.
Movement patterns combined with cardiovascular response quantify real effort — not just heart rate or step count.
Heart rate, HRV, sleep stages, and activity are measured 24/7 to build a longitudinal model of your health.
Strength, cardio, recovery, and stress data are analyzed together — the way your body actually works.
Built by former Tesla engineers who believe strength training deserves real measurement.
Backed by
Plus angels from OpenAI, Tesla, and more.
Ships Q3 2026