RepOne Strength - Velocity Based Training RepOne Logo
One giant rep for mankind.

Train better with data

Take strength training to the next level with RepOne 3D motion tracking.

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R1 Preorder Bag

RepOne orders are shipping now, with a limited edition bonus

We're delivering units as we produce them over the course of summer 2020, so the earlier you order the earlier you will receive yours.

You'll also receive this special gym backpack we designed for our early adopters. It's got a pouch for your RepOne unit and space for the rest of your gear, and it's a free upgrade while supplies last.

Automatic tracking

Automatic workout tracking

You lift, we track. RepOne is smart enough to count sets and reps automatically, recording dozens of datapoints about each.

3D motion sensing

Full 3D motion sensing

RepOne’s inductive sensor monitors motion in full 3d space, so you can track barpath, jump trajectory, and dozens of other movements.

Accuracy at all angles

Astounding accuracy

RepOne’s tether is vastly more accurate than wearables or camera systems, and 3D sensing means angles and lateral movement don't fool it.

Easy setup

Easy magnetic setup

Set up in 5 seconds. RepOne’s magnetic base clamps securely to a plate or rack, and the tether attaches to the object you're tracking via strap or roller magnet.

A month of battery

A month of battery

You read that right: RepOne can run for a week continuously, or up to a month if turned off between sessions--so you don’t have to charge it every time you use it.

Guaranteed durability

Durability, guaranteed

RepOne technology has been taking a beating in real gyms around the world for years. We’re so confident it will last, you get free repairs for a year.

RepOne Personal App

Free workout tracking for individual athletes

RepOne Personal

Connect to a single motion sensor via bluetooth on your mobile device.

See extended set metrics in real time while you lift.

Auto-track workouts with smart set and rep detection.

Track progression through a detailed history view.

Calculate maxes with our cutting-edge 1RM algorithm.

Learn More

StrengthOS for Teams

Connect and automate your entire gym

RepOne Personal

Smart workout stations deliver your programs to every station.

Guided autoregulation keeps athletes in your target ranges.

Design velocity-based workouts with our powerful program builder.

Team-scale VBT individualizes your workouts automatically.

Keep athletes focused with auto-tracking and guidance.

Learn More

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Unmatched value

RepOne 3D Motion Sensor

RepOne 3D Motion Sensor

No other high-accuracy VBT device comes close to RepOne’s price point, and none are capable of 3D motion tracking. Compatible with RepOne Personal and StrengthOS.


  • Velco strap
  • USB-C charging cable
  • Protective drawstring bag

Estimated backlog of ~6wks, orders ship first come first served


StrengthOS for Teams

The world’s most powerful autoregulated program builder, plus a full athlete management system all in one, for serious teams and trainers.

Preorder bonuses:

  • Prioritized hardware shipment when you add StrengthOS
  • One free month of service, or two with annual plan

Note: Requires a RepOne sensor and iPad Mini 2 or later at each workout station

RepOne 3D Motion Sensor

Roller Magnet Upgrade

The quickest way to attach your tether to a barbell, this neodymium roller magnet always stays at the bottom of the barbell where it belongs.

Trusted by the best

Our products are used in gyms around the world

Keep in touch

Join the mailing list to stay up to date with RepOne products, including when they're available without a preorder (estimated mid-2020)

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Stay up to date with the latest developments

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It's almost showtime ⏳⏳⏳ • • Email going out to pre-order customers in the next couple of days. Keep an eye on our stories for more frequent updates as production begins!

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The RepOne Athlete Kiosk App and Coaching Portal alphas are running for the first time outside of S&S Barbell! Huge thanks to our first alpha partner, the innovative team at @hofstrastrength...

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