Fort has launched as the first wearable device designed specifically for strength training — filling a gap that fitness trackers have ignored for years.
The founders are ex-Tesla engineers who worked on Cybertruck, Semi, and Cybercab, with one co-founder bringing previous propulsion and Starlink experience from SpaceX. The San Francisco-based company has raised early-stage funding from Y Combinator alongside Afore, Weekend Fund, Theory Forge, and angel investors from OpenAI and Tesla.
Fort is a screenless wristband that automatically tracks reps, velocity, range of motion, and proximity to failure. Its companion app displays session scores, per-muscle volume breakdowns, time under tension, rep velocity, rest times, and rep cadence — the kind of granular strength data that previously required expensive gym equipment or manual logging.
The device breaks sessions down by muscle group, showing whether each one received maintenance, growth, or overload stimulus.
Beyond the gym, Fort tracks sleep, stress, HRV, and cardio throughout the day. The charging case doubles as an external motion sensor that snaps onto gym equipment for enhanced lower-body tracking accuracy.
The screenless design is intentional — no distracting notifications during workouts. The focus is purely on capturing movement data and delivering insights through the app afterward.
Every major wearable — Apple Watch, Whoop, Oura — excels at tracking running, cycling, and recovery. But strength training has been largely ignored because detecting whether someone is doing a bench press, overhead press, or bicep curl from wrist motion alone requires sophisticated ML models.
Fort is available for pre-order at $289, with a retail price of $349 and shipping expected in Q3 2026.