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RepOne Strength
Techstars '22New York City, US · Founded 2017 · 9 employees on LinkedIn · 1 known investors
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RepOne provides strength training software and hardware integration tools that enable coaches and athletes to automate workout programming and real-time performance tracking at an affordable cost. The platform targets amateur athletes, professional coaches, and fitness enthusiasts across all experience levels.
Also known as Rep One Strength · RepOne
Investors · 1
How we know: the Techstars portfolio · open dataset · Top 3000 Accelerator Startups (no YC) 2026-08 · Not right? Tell us
Company profile
researched Sep 2026RepOne Strength develops connected strength-training hardware and accompanying software for coaches, trainers and individual lifters. Its core shipping product is the RepOne Tether, a velocity-based training (VBT) system described by the company as research-grade and offering 3D position sensing and linear accuracy for measuring bar speed during weighted exercise. The Tether works with the free RepOne Personal app for individuals and integrates with RepOne Coach for those training others; a limited "Throwback Edition" run of translucent clear and red Tether units is also offered.
The company positions RepOne as an ecosystem rather than a single device, spanning RepOne Connected smart exercise equipment across velocity-based training, flywheel and digital weight modalities, linked to training software. On the software side, StrengthOS is offered as athlete management software for teams and personal trainers, with an emphasis on implementing autoregulation for every athlete in every workout; a one-month free trial is advertised. A motorized resistance product for high-demand environments, the Profile Pro Pulse powered by EStack, is announced as coming soon. Ancillary offerings include the RepOne Protect Plan, a one-year extended warranty with preventative maintenance service for a Tether unit, and rental of Tether devices for camps and clinics.
Company writing frames its approach through control theory: the coach-athlete feedback loop is treated as a control problem in which sensors and software continuously update background "controllers" that estimate an athlete's current strength level and adjust prescribed training loads. The company states it has worked with teams across many sports and levels, runs surveys with coaches on topics such as workout scheduling, warm-up instruction and rack grouping, and has drawn on roughly a million data points from OpenBarbell to develop its models.
Founding story
Jordan Berke is listed as founder. Company writing references the founder's prior work as a Control Systems Engineer at Pratt & Whitney, where control theory was applied to jet engines, as the conceptual basis for treating autoregulated strength training as a feedback-control problem. [2][3]
Business model
RepOne sells connected strength-training hardware directly (including online via a shop and a sales contact channel) and pairs it with subscription-style training software for coaches and teams, plus a free consumer app. Additional revenue lines include an extended warranty and preventative maintenance plan and equipment rental for camps and clinics. [0][1][3]
Traction
Customer testimonials cite use in team and in-season training for guiding weight selection and in preparation for 2024 Paralympic Games qualification. The company states it has worked with teams across essentially every sport and level, ran an alpha program for its software, and has about a million OpenBarbell data points informing its models. A directory listing estimates annual revenue of about $684,440. [0][1][2][3]
Latest developments
The company has announced the Profile Pro Pulse, motorized resistance equipment powered by EStack, as coming soon, and is running a limited Throwback Edition run of translucent clear and red RepOne Tether VBT systems with a discount code. RepOne Tether is advertised as shipping within 48 business hours, and a gym sponsorship program is open for applications. [0][1]
▸Full profile — market position, technology, go-to-market, geography, history
Market position
A small Brooklyn, New York-based company in wellness and fitness services and sports technology with roughly 1-10 employees, serving strength and conditioning coaches and athletes with VBT hardware and software. [3]
The company positions itself on tight integration between sensors and software, marketing StrengthOS as athlete management software that enables autoregulation for every athlete in every workout, and describing the RepOne device's 3D sensing and linear accuracy. Automation of weight and rep selection is presented as saving trainers over half their time, allowing them to serve more clients and making one-on-one training more affordable. [0][1][2][3]
Technology
The RepOne Tether is a velocity-based training device providing 3D position sensing and linear accuracy for measuring barbell movement, feeding data into RepOne's apps and athlete-management software. The RepOne Connected ecosystem also covers flywheel and digital weight equipment, and the announced Profile Pro Pulse uses motorized resistance powered by EStack. Software automates factors such as weight and rep selection and applies control-theory-inspired "controllers" that continuously update estimates of an athlete's strength between sets and sessions. Website infrastructure includes HubSpot CMS Hub, Shopify Buy Button, Cloudflare, jQuery and Heap analytics. [0][1][2][3]
Go-to-market
Direct online sales of hardware, a free consumer app as an entry point, free one-month software trials for coaches and trainers, a sales contact channel for teams, gym sponsorship applications, equipment rental for events, and a blog plus coach surveys used to gather product feedback and engage the strength community. [0][1][2]
Team-based strength and conditioning coaches, personal trainers, athletic programs and individual lifters, including elite and Paralympic-level athletes; the company also targets gyms and organizers of camps and clinics through sponsorship and rental programs. [0][1][3]
Geography
Headquartered in Brooklyn, New York, United States. [3]
History
Founded in 2017. Early blog material describes an alpha software program, ongoing coach surveys, and plans for RepOne device shipment following work that built on the OpenBarbell dataset. The company later expanded from the Tether VBT system into a broader RepOne Connected ecosystem, StrengthOS athlete management software, and the announced Profile Pro Pulse motorized resistance product. [0][1][2][3]
Compiled by commissioned research from 5 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Related companies · 1
Companies working in the same space as RepOne Strength.
Timeline · 2
launches, deals, and filingsRepOne announced the Profile Pro Pulse, motorized resistance exercise equipment for high-demand environments, powered by EStack, as an upcoming product.
A limited run of translucent clear and red RepOne Tether velocity-based training systems was offered, with a $20 discount code.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 5
primary sources listed
- RepOne Strengthreponestrength.com · web
5 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does RepOne Strength do?
- RepOne Strength builds velocity-based training sensors and connected strength equipment paired with athlete management software.
- Who are RepOne Strength's investors?
- RepOne Strength's investors include Techstars.
- Where is RepOne Strength headquartered?
- RepOne Strength is headquartered in New York City, US.