Nix

What Nix does

Nix Biosensors, Inc. (Norwell, MA; founded 2015 by Meridith Cass) designs and sells a wearable electrochemical biosensor platform that continuously measures sweat biomarkers to deliver real-time, personalized hydration data. The core hardware is a reusable electronic pod (~$189) that clips onto a single-use adhesive sweat patch applied to the bicep; the pod transmits fluid and electrolyte loss data every second to the Nix Solo (individual) or Nix Pro (group) mobile applications, which deliver personalized "when, what, and how much to drink" recommendations. Proprietary machine learning algorithms, trained on thousands of workouts, convert raw impedance measurements at two electrode pairs into whole-body fluid and electrolyte loss estimates with reported validation precision of 98.3% (osmolality MAPE) and 99.8% (temperature correction across 10–60°C). The platform integrates with Apple Watch, Garmin watches/Edge cycling computers, and TrainingPeaks, and received Union Cycliste Internationale (UCI) approval for use during professional cycling competition.

Nix operates a hybrid go-to-market combining direct-to-consumer e-commerce (nixbiosensors.com, Apple/Google App Store, Garmin Connect IQ) with a consultative enterprise field sales motion through Nix Pro, targeting sports teams, university athletic departments, national governing bodies, industrial employers, and fire departments. Customer segments span endurance athletes (primary), sports teams and athletic programs (primary), and emerging verticals in industrial/occupational safety, military/tactical athletes, and fitness studios (Modo Yoga partnership). Recurring revenue is generated through sweat patch refills sold at $25 per 4-pack or $22.50 via a 4-week auto-renewing subscription, layered on the durable hardware base. HSA/FSA eligibility via Flex and B2B wholesale/VAR/sweat testing service programs further expand distribution. Anchor enterprise customers include Chicago Fire FC, Legacy Motor Club, EF Pro Cycling, US Speedskating, Sheffield United FC, Bay FC, Baylor University Athletics, Penn State, LSU Football, Modo Yoga, and industrial buyers such as Bechtel, SDGE, Unilever, Landus, and Mayo Clinic. The company is private, venture-backed (~$7M disclosed funding across 2015–2022), with 11–50 employees and a leadership team that has recently been augmented by senior hires from Zwift, Reebok, Polar, and the NFL.

Name

Nix

Legal name

Nix, Inc.

Website

https://nixbiosensors.com

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

11–50 employees

Short description

Nix Biosensors designs a wearable sweat-analysis biosensor that delivers real-time, personalized hydration data to individual athletes (Nix Solo) and teams or workforces (Nix Pro), serving endurance athletes, professional and collegiate sports programs, industrial employers, and fitness studios globally.

Ownership category

akta.pro rank

Product category

Wearable Hydration Biosensors

NAICS

Electromedical and Electrotherapeutic Apparatus Manufacturing (334510), Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515)

SIC

Electromedical & Electrotherapeutic Apparatus (3845)

akta.pro primary industry

Hydration, Nutrition & Metabolic Tracking Devices (Smart Bottles, Breath/Metabolic Analyzers) (CRACAQAI)

akta.pro secondary industry

Smart Fitness & Training Devices (Connected Fitness Sensors, Smart Jump Ropes, etc.) (CRACAQAH)

Keywords

• Wearable hydration biosensor
• Sweat analysis technology
• Electrochemical biomarker monitoring
• Real-time hydration tracking
• Sports performance wearables

Headquarters

HQ city

Norwell

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Operations, Technology or R&D, Personnel, Marketing or Sales, Infrastructure

Revenue model

1. Hardware Sales (Hydration Biosensor): One-time purchase of the Nix Hydration Biosensor device consisting of a rechargeable pod, charging case, USB cord, and 4 sweat patches. The pod is durable, reusable, and built to last, making this a durable goods revenue model with long customer lifetime value potential through consumables.
2. Consumable Sweat Patch Refills: Recurring revenue from single-use sweat patches (4-pack for $25, subscription at $22.50). Patches are replaced after each workout and are the primary consumable replenishment item. Subscriptions auto-renew every 4 weeks, creating predictable recurring revenue from the installed hardware base.
3. Training Bundles: Pre-packaged bundles combining the biosensor with sweat patch refills at discounted prices (Full Training Bundle $245, Half Training Bundle $215). Bundle pricing incentivizes larger initial purchases while providing savings versus separate components.
4. HSA/FSA Eligible Products: Partnership with Flex enables customers to purchase Nix products using pre-tax HSA/FSA funds, effectively lowering out-of-pocket cost by 30-40% depending on tax bracket. This expands addressable market and removes financial friction for health-conscious consumers.

Pricing tiers

Go-to-market motion4 records

Distribution channels6 records

Marketing channels8 records

Core offering

Nix designs, manufactures, and sells wearable sweat-analysis biosensors that measure fluid and electrolyte losses in real time during workouts and transmit personalized hydration recommendations to a paired mobile app. The company sells the durable biosensor hardware ($189), recurring single-use sweat patch refills ($25 per 4-pack or $22.50 on subscription), and delivers the data through two software tiers: Nix Solo for individual athletes and Nix Pro for group monitoring by coaches, nutritionists, and safety supervisors managing teams, military units, or industrial workforces.

Product overview

Nix Biosensors offers a unified hydration monitoring platform centered on its core Nix Hydration Biosensor hardware — a wearable biosensor combining a reusable electronic pod with single-use adhesive sweat patches. The system is delivered through two complementary software tiers: Nix Solo (individual self-monitoring for athletes) and Nix Pro (group monitoring for coaches, nutritionists, and safety supervisors managing teams, occupational workers, or military personnel). Both apps process real-time sweat data and deliver personalized hydration recommendations. The platform is supported by calculator tools (Race Day, Predictive, Priming, Custom Drink, Recovery) and integrations with Apple Watch, Garmin devices, and TrainingPeaks. Physical products include the biosensor pod, sweat patch refills (with subscription options), training bundles (Full and Half), and gift cards. The company also offers B2B programs including wholesale, VAR, and sweat testing services.

Differentiator

Problem solved

Functional benefit

Brands

• Nix Solo: Self-monitoring hydration app for individual athletes that continuously measures fluid and electrolyte losses and sends personalized notifications to a single user's phone, watch, or bike computer in real time.
• Nix Pro
• Self Health

Products and services

• Nix Hydration Biosensor The core wearable biosensor hardware consisting of a rechargeable electronic pod (lightweight, similar in size to a Garmin watch face) that clips onto a single-use adhesive sweat patch applied to the bicep. The pod continuously measures electrochemical biomarkers in sweat and transmits real-time hydration data (fluid and electrolyte losses) to the Nix Solo or Nix Pro app every second.
• Sweat Patch Refills Single-use adhesive sweat patches with a flow channel that detect electrochemical biomarkers in sweat. Each patch sticks to the bicep via medical-grade latex-free adhesive and is disposed of after each workout. Sold in 4-packs for $25 one-time or $22.50 per delivery on 4-week auto-renewal subscription.
• Nix Solo Self-monitoring hydration app for individual athletes that pairs with the Nix Hydration Biosensor to continuously measure fluid and electrolyte losses during workouts and deliver personalized real-time hydration notifications (when, what, and how much to drink) to a single user's phone, Apple Watch, Garmin watch, or Garmin Edge bike computer. Every workout is saved to the athlete's sweat profile for historical tracking.
• Nix Pro Group-monitoring hydration platform enabling a coach, nutritionist, safety supervisor, or researcher to monitor multiple subjects' fluid and electrolyte losses in real time through a comprehensive dashboard. Supports per-subject personalized hydration strategies and serves enterprise buyers including sports teams, university athletic departments, military units, and industrial employers.

Quantifiable outcome

• 98.3% measurement precision (MAPE of 1.7%) in blinded osmolality validation testing
• +2 more outcomes

Named customers14 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

AI capability3 records

Feature9 records

Partnerships

30 partnerships are on record, tiered core and minor.

• Baylor University AthleticscoreStrategic or Co-development Partner · 18 May 2026Two-year partnership making Nix the Official Hydration Biosensors Supplier of Baylor Athletics. Deploys Nix Pro across all 19 Division I programs covering approximately 450 student-athletes annually with wearable sweat patches providing real-time data on fluid and electrolyte loss. Establishes a living lab for both organizations to analyze data across sports, training demands, and environmental conditions.
• Modo YogacoreStrategic or Co-development Partner · 4 December 2025International hot yoga franchise partnership bringing Nix's hydration monitoring technology to Modo Yoga studios in the US, France, and Canada. Enables personalized hydration guidance for hot yoga practitioners, supporting improved recovery, safety, and performance in heated yoga environments. Marks Nix's first entry into the broader fitness community beyond traditional endurance and team sports.
• Legacy Motor ClubcoreStrategic or Co-development Partner · 18 March 2025NASCAR racing team partnership making Nix the Official Hydration Biosensor Supplier. Outfits both drivers and pit-crew athletes with biosensors for real-time hydration monitoring to maintain muscle function, cognition, reaction speed, and endurance under extreme heat and physical stress of racing.
• US SpeedskatingcoreStrategic or Co-development Partner · 16 January 2025Official Supplier for the National Team beginning with the 2024-2025 season. Sports dietitian uses Nix to provide personalized hydration recommendations and track acclimatization during winter training, with hydration data revealing dramatic athlete variability across the team.
• EF Pro CyclingcoreStrategic or Co-development Partner · 16 January 2025Official Hydration Biosensor Supplier for professional cycling team. Director of Sports Science Dr. Kevin Sprouse uses Nix to maximize team performance on the roads through custom hydration strategies informed by individual sweat data.
• Chicago Fire FCcoreStrategic or Co-development Partner · 16 January 2025Official Supplier and Partner for Major League Soccer club. Nix Pro dashboard shows full team's unique hydration data in a single view, enabling personalized hydration strategies for each player in both training and match environments.
• Sheffield United FCcoreStrategic or Co-development Partner · 16 January 2025Official Supplier for first team, integrating real-time hydration tracking to personalize player performance and recovery in both training and competition.
• PitFit MotorsportminorStrategic or Co-development Partner · 16 January 2025Partnership advancing hydration awareness and management in motorsport through case study collaboration focused on custom hydration products for race car drivers.
• Human Powered HealthminorStrategic or Co-development Partner · 16 January 2025Performance physiologists work closely with athletes to gather personalized hydration insights through case study collaboration.
• National Cycling LeagueminorStrategic or Co-development Partner · 16 January 2025Partnership providing innovative hydration technology to NCL athletes competing in professional cycling league.
• Team AMANIminorStrategic or Co-development Partner · 16 January 2025Partnership improving cycling training for East African cyclists through hydration data and personalized guidance.
• Podium RacingminorStrategic or Co-development Partner · 16 January 2025Official partnership for personalized hydration strategies in professional racing team.
• Frontline Health & PerformanceminorStrategic or Co-development Partner · 16 January 2025Co-founded by Dr. Michael Williams-Bell, Frontline HP works with North America's top fire departments to implement Nix Pro during training academies. Co-founder: 'It's not uncommon for firefighters to end up in the hospital with severe dehydration. We see huge value in implementing Nix Pro.'
• SOS HydrationminorGTM or Marketing Partner · 16 January 2025Preferred Hydration Partner in Nix's program connecting hydration brands with individualized sweat insights. SOS products can be matched to athletes' specific sweat composition using Nix data. Partners receive code NIXPARTNER for 15% discount offers to Nix users.
• INFINIT NutritionminorGTM or Marketing Partner · 16 January 2025Preferred Hydration Partner enabling custom hydration and fueling formulas based on Nix sweat composition data. Code NIX10OFF provides $10 off first order for Nix users.
• LMNTminorGTM or Marketing Partner · 16 January 2025Electrolyte hydration brand listed among partner brands collaborating with Nix on hydration education and awareness.
• Skratch LabsminorGTM or Marketing Partner · 16 January 2025Sports hydration and nutrition brand listed among partner brands collaborating on hydration education.
• SaltStickminorGTM or Marketing Partner · 16 January 2025Electrolyte supplement brand partnered with Nix on education campaign around sweat testing and hydration science, featuring 8x IRONMAN winner Ben Hoffman.
• HypericeminorGTM or Marketing Partner · 16 January 2025Recovery technology brand listed as partner brand in Nix ecosystem.
• ASICSminorGTM or Marketing Partner · 16 January 2025Athletic footwear and apparel brand listed as partner brand in Nix ecosystem.
• Mayo ClinicminorStrategic or Co-development Partner · 16 January 2025Listed among trusted organizations using Nix Pro for occupational safety and heat illness prevention programs.
• SDGE (San Diego Gas & Electric)minorStrategic or Co-development Partner · 16 January 2025Utility company using Nix Pro for worker hydration monitoring and heat safety compliance in field operations.
• BechtelminorStrategic or Co-development Partner · 16 January 2025Global engineering and construction firm using Nix Pro for worker hydration monitoring in hot work environments.
• UnileverminorStrategic or Co-development Partner · 16 January 2025Consumer goods conglomerate using Nix Pro for occupational hydration monitoring across operations.
• LandusminorStrategic or Co-development Partner · 16 January 2025Agricultural cooperative using Nix Pro for worker safety in grain handling and agricultural operations with heat exposure.
• 211 Performance TherapyminorStrategic or Co-development Partner · 16 January 2025Tactical athlete training organization working with North America's top fire departments, using Nix Pro for hydration monitoring and early intervention.
• ApplecoreTechnology or Integration · 16 January 2025Apple Watch integration enables real-time hydration notifications and data display on Apple Watch devices during workouts.
• GarmincoreTechnology or Integration · 16 January 2025Integrations with Garmin watches, Garmin Edge bike computers, and Garmin Connect IQ store enable real-time hydration data on Garmin devices.
• TrainingPeakscoreTechnology or Integration · 16 January 2025Integration with TrainingPeaks enables seamless hydration data syncing for athletes using the platform for training planning and analysis.
• FlexcoreGTM or Marketing Partner · 16 January 2025Partnership with Flex enables consumers to use HSA/FSA funds for Nix product purchases, saving 30-40% through pre-tax dollars. Flex provides eligibility verification and Letter of Medical Necessity documentation at checkout.

Scale indicators8 records

Recent moves7 records

Expansion highlights7 records

Direct peers

• Epicore Biosystems: Epicore Biosystems develops wearable sweat-sensing patches and connected platforms for hydration, electrolyte, and biomarker monitoring in athletes, workers, and consumers. Closest direct competitor to Nix with overlapping sweat-patch biosensor technology and similar enterprise/industrial customer targets.
• Kenzen: Kenzen produces a wearable sweat patch and platform for occupational heat safety and worker hydration monitoring. Direct peer to Nix Pro's industrial/OHS segment, both targeting heat-illness prevention for laborers and OSHA-compliance documentation.

Emerging players

• Eccrine Systems: Eccrine Systems develops sweat-based biosensors for non-invasive health and drug monitoring. Emerging player in the sweat biosensor space with overlapping technology but different primary focus areas, making it a partial competitor and potential adjacent technology reference for Nix.
• CORE (by greenTEG): CORE offers a continuous core body temperature sensor that, like Nix, received UCI approval for professional cycling competition. Adjacent wearable for athlete physiology monitoring, often used alongside Nix in elite sports programs rather than head-to-head competition.

Broad incumbents

• Whoop: Whoop offers a subscription-based wearable strap that tracks strain, recovery, sleep, and increasingly hydration-related biomarkers. Comparable business model (hardware plus recurring subscription) and target athlete user, but broader physiological scope than Nix's hydration-only focus.
• Oura: Oura makes a smart ring focused on sleep, recovery, and readiness metrics under a subscription model. Comparable hardware-plus-subscription business model and direct-to-consumer health-conscious buyer, though broader in metrics and not specifically targeted at hydration.
• Garmin: Garmin is a broad incumbent in sports wearables and bike computers, and is also a Nix integration partner via Connect IQ. Comparable as a sports/performance wearable ecosystem player, though Garmin does not directly compete in sweat-based hydration sensing.
• Polar Electro: Polar is an established sports wearable brand offering heart-rate-based training, sleep, and recovery tracking. Broad incumbent serving the same endurance and team sport buyers as Nix, but without a sweat-based hydration sensor product line.
• Abbott (Lingo): Abbott's Lingo biosensor program extends the company's continuous-monitor franchise into consumer metabolic health. A potential adjacent incumbent that could expand into continuous hydration monitoring with the manufacturing and validation scale of a major medical device company.

Others

• Hyperice: Hyperice is a recovery and performance technology brand (massage guns, Normatec, Venom) listed as a Nix partner brand. Connected through the athletic performance ecosystem rather than direct product competition.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/nixbiosensors
• LinkedInlinkedin.com/company/nix
• Instagraminstagram.com/nixhydration
• Xx.com/NixBiosensors

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds10 records

Investors15 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 Nix