Fort: Automatic Strength Tracking for People Who Care About Longevity
Other wearables track sleep and heart rate, but underestimate or ignore muscles and strength!
TLDR; Most wearables focus on sleep and heart rate. Fort is a wearable that automatically tracks strength training, for people focused on longevity.
We just opened pre-orders! fort.cx/order
Setting The Scene
Strength training has exploded in popularity over the past decade, especially recently. Whoop’s own data shows that strength workouts on their platform increased 122% YoY between 2024 and 2025. For female Oura members, strength training was the third most popular activity, behind “walking” and “housework.” People now see strength training as a critical part of their wellness routine, not just a niche hobby for gym bros.
And yet, neither Whoop nor Oura offers a strength tracking feature that actually works.
The Problem
If you want to track strength workouts on existing wearables, you typically need to manually log every set, rep, and exercise. There are some attempts at automatic rep and exercise detection from Garmin and third-party Apple Watch apps, but the experience of using these products is unrefined compared to cardio or sleep features.
Even after logging everything manually, wearables underestimate or ignore muscle fatigue, and lack actionable insights on how users should adapt their training to achieve their goals.
What we're building
Fort is a wearable that measures motion and heart rate to detect exercises, reps, sets, form, and fatigue that occurs while strength training. The device is a screenless band that can be worn on the wrist, attached magnetically to workout equipment, or worn with body straps elsewhere, so we can capture movements that wrist-only wearables miss.
We also track steps, sleep, heart rate, and cardio exercise, to provide you with a comprehensive picture of your health.
You can wear Fort all day, and the battery lasts a week with normal use.
Who it’s for
Anyone who cares about their health and regularly does some form of strength training, like gym or pilates!
About us
Paul, Zac, and Miranda are ex-Tesla engineers who worked on Cybertruck, Semi, and Cybercab. We know how to build and ship consumer hardware at scale.
Fort is shipping starting June 2026. Pre-Order at: https://www.fort.cx/order/
