What Notch does

Notch Interfaces Inc., operating as Notch Strength Lab, is a Brooklyn-based private company founded in 2013 that builds wearable motion-tracking hardware and a paired iPhone application for strength training. The core product consists of four body-worn sensors that capture 150+ motion parameters during lifts, feeding data into the Notch Strength Lab app, which renders a real-time 3D avatar of the user, performs form analysis on every rep, and applies velocity-based training and biomechanical methodology to recommend weights and targeted exercises. The underlying technology and approach are backed by 80+ peer-reviewed publications in biomechanics and healthcare.

The business model combines hardware sales with a recurring annual membership: the Notch Kit bundles four sensors, breathable mesh straps, a fast charging station, a carrying pouch, an integrated sensor t-shirt, and a one-year membership providing automated lift logging and smart form tracking through the app. Distribution is direct-to-consumer through the company's Shopify-based e-commerce site (wearnotch.com) with pre-order fulfillment, supplemented by email newsletter capture and earned media coverage in publications such as TechCrunch and Ars Technica. The target customer is the individual fitness enthusiast or athlete seeking data-driven form feedback, injury prevention, and progress tracking that the company positions as equivalent to $400/hour sports study lab analysis.

Capitalization to date is minimal: the company received $25,000 from SOSV HAX in 2013 and participated in Techstars in 2018, and operates with a 1-10 person team. Founding leadership includes Stepan Boltalin (CEO), Raj Jhaveri (COO), and Eszter Ozsvald. Notch is currently in pre-order commercial launch mode, with no disclosed revenue and no named enterprise customers.

Name

Notch

Legal name

Notch Interfaces Inc.

Website

https://wearnotch.com

Company type

Private

Founded year

2013

Operating status

Operating

Headcount range

1–10 employees

Short description

Notch Interfaces Inc. builds wearable motion sensors and an iPhone app that provide real-time 3D form analysis and velocity-based training feedback for individual strength training athletes and fitness enthusiasts, sold direct-to-consumer as a hardware-plus-subscription kit.

Ownership category

akta.pro rank

Product category

Wearable Fitness Technology

NAICS

Other Measuring and Controlling Device Manufacturing (334519), Sporting Goods Retailers (45911)

SIC

Electronic Components & Accessories (3670)

akta.pro primary industry

Consumer Health Wearables & Fitness Trackers (Wellness Monitoring) (HLAHACAJ)

akta.pro secondary industry

Wearable-Integrated & Smart Performance Apparel (CRAAAEAL)

Keywords

• Wearable motion sensors
• Strength training technology
• Biomechanical analysis wearables
• Fitness performance tracking
• Velocity-based training

Headquarters

HQ city

Brooklyn

HQ country

United States

HQ region

North America

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Technology or R&D, Personnel, Marketing or Sales, Operations

Revenue model

1. Hardware Sales: Sale of Notch sensors - physical wearable devices that track body movements during exercise
2. Subscription Membership: One Year Notch Membership included with purchase, providing automated lift log and smart form tracking app access. Recurring subscription model for continued access to analysis features and software updates

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Notch designs and sells wearable motion sensors (the Notch Sensors) and an accompanying iPhone application (Notch Strength Lab) that together capture 150+ motion parameters during strength training exercises and deliver real-time 3D avatar-based form analysis, velocity-based training recommendations, and automated rep-by-rep logging. The system is sold as a bundled kit (sensors, straps, charging station, apparel, and an annual membership subscription) directly to individual fitness enthusiasts and athletes via the company's e-commerce site.

Product overview

Notch offers a unified strength training optimization system comprising hardware sensors and software. The core offering includes Notch Sensors (four wearable motion-tracking devices) paired with the Notch Strength Lab iPhone app, which provides real-time 3D form visualization, velocity-based training analysis, and biomechanical feedback. Products are sold individually (sensors, app membership) or bundled together as the Notch Kit, which also includes accessories like Breathable Mesh Straps, a High Performance Integrated Sensor T-Shirt, Fast Charging Station, and a Carrying Pouch.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• Prevents lower back injuries, avoids lifter's elbow, saves rotator cuffs
• +2 more outcomes

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability6 records

Feature5 records

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• Fitbit: Fitbit (now Google) offers consumer fitness trackers and a Premium subscription with workout insights — a broad incumbent competing for the same mass-market fitness-aware consumer.
• Garmin: Garmin's fitness watches and HRM-Pro accessories serve serious athletes with advanced training metrics, overlapping with Notch on the data-driven strength-training buyer even though Garmin's stack is wrist- rather than body-worn.
• Polar: Polar's fitness watches and H10/H9 heart rate sensors serve athletes with detailed training load and recovery metrics, sitting in the same data-driven strength and conditioning category as Notch.
• Apple Watch: Apple Watch is the dominant consumer fitness wearable, bundling workout tracking, heart rate, and increasingly form-related features into a general-purpose device — the largest incumbent Notch must differentiate against.

Direct peers

• Whoop: Whoop sells a fitness wearable bundled with a monthly subscription that unlocks performance, strain, and recovery analytics — structurally analogous to Notch's hardware-plus-membership model for data-driven training.
• Tonal: Tonal is a connected strength-training system with AI form coaching and rep-by-rep feedback; it competes with Notch for the same 'smarter strength training' budget, even though its intelligence lives in the equipment rather than on the body.
• PUSH: PUSH makes a wearable strength-training sensor that measures velocity, reps, and sets to provide real-time feedback — the closest direct comparison to Notch's sensor-based form and velocity-based training value proposition.
• Tempo: Tempo offers an AI-powered home strength-training studio with 3D form tracking and rep-by-rep coaching, overlapping with Notch on the strength-training-plus-real-time-feedback positioning.

Emerging players

• Hyperice: Hyperice builds tech-forward performance and recovery products (wearable Normatec, Vyper, etc.) for athletes and pros, increasingly moving into connected training — adjacent competitive and partnership territory to Notch.
• Wahoo: Wahoo makes connected fitness sensors (heart rate, power, environment) primarily for cycling and endurance, with a subscription analytics layer — analogous sensor-plus-software architecture for athletes.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/wearnotch
• Facebookfacebook.com/wearnotch
• LinkedInlinkedin.com/company/notch-interfaces

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds3 records

Investors3 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Notch