Femometer

What Femometer does

Femometer is a private women's health technology company founded in 2015 that designs, manufactures, and sells direct-to-consumer fertility and cycle-tracking hardware. Its product portfolio centers on three generations of smart rings (Gen1 at $139.99, Gen2 at $199.99, Ring Air at $199.99) that continuously measure basal body temperature (BBT), sleep, heart rate, HRV, and activity via proprietary NTC sensor systems and the proprietary Minima Algorithm, alongside complementary devices including the Vinca 2.0 basal thermometer and IVY103 digital LH ovulation predictor kit. All hardware syncs to a free Femometer companion app (iOS/Android) with Apple HealthKit integration, and the company explicitly does not charge an app subscription fee, making revenue entirely dependent on unit hardware sales.

The company sells exclusively through its own e-commerce storefront (femometer.com), shipping to the US, Canada, UK, and Europe. Customer segments include women trying to conceive (primary), women seeking hormone-free natural family planning, women in perimenopause, and broader health-conscious women. The company claims 10 million+ users have used its products, backed by extensive third-party certifications (FDA, CE, FCC, RoHS, UKCA, CPSIA, CPC) and medical advisory from Dr. Jan Rydfors (MD Stanford). Femometer is bootstrapped and founder-led, with corporate HQ in Princeton, NJ and apparent Asian operational roots (Wan Chai, HK), operating with 51-100 employees and no disclosed institutional funding, M&A, or partnership activity.

Name

Femometer

Legal name

Femometer Inc

Website

https://femometer.com

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

51–100 employees

Short description

Femometer is a private direct-to-consumer women's health hardware company selling smart rings, basal thermometers, and LH ovulation test kits through its own e-commerce site, targeting women trying to conceive and those seeking cycle and fertility tracking without subscription fees.

Ownership category

akta.pro rank

Product category

Women's Health Wearables

NAICS

Electromedical and Electrotherapeutic Apparatus Manufacturing (334510), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (3345)

SIC

Electromedical & Electrotherapeutic Apparatus (3845), In Vitro & In Vivo Diagnostic Substances (2835)

akta.pro primary industry

Women’s Health & Fertility Tracking Devices (Ovulation/Temp Sensors, Pelvic Health Devices) (CRACAQAJ)

akta.pro secondary industries

Thermometers & Temperature Monitoring (Smart Thermometers) (CRACAQAG), Fertility & Ovulation Products (OTC) (CRABAIAK)

Keywords

• Women's health tracking
• Smart ring wearables
• Fertility monitoring devices
• Basal body thermometers
• Ovulation prediction kits

Headquarters

HQ city

Wan Chai

HQ country

Hong Kong SAR China

HQ region

Asia

Offices1 record

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Smart Ring Hardware Sales: One-time hardware sales of smart rings (Gen1, Gen2, Ring Air) and accessories. Products sold at various price points with no ongoing subscription fees required for app functionality.
2. Fertility Device Hardware Sales: One-time sales of Vinca 2.0 basal thermometers, IVY103 ovulation predictor kits, LH test refills, and wireless charging cases. Complementary products to smart rings for comprehensive fertility tracking.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels6 records

Core offering

Femometer designs and sells women's health tracking hardware, including smart rings (Gen1, Gen2, Ring Air), Bluetooth basal thermometers (Vinca 2.0), and digital LH ovulation predictor kits (IVY103). All devices sync to the Femometer App, which provides menstrual cycle, ovulation, fertility, sleep, heart rate, HRV, and activity tracking with no subscription fees. The ecosystem targets women trying to conceive, those using natural family planning, and health-conscious consumers seeking continuous reproductive health monitoring.

Product overview

Femometer offers a comprehensive women's health tracking ecosystem centered on smart ring wearables and digital health apps. The portfolio includes three generations of smart rings (Gen1, Gen2, and Ring Air) that continuously monitor Basal Body Temperature (BBT), sleep, heart rate, HRV, and menstrual cycles. Supporting devices include the Vinca 2.0 basal thermometer and IVY103 LH ovulation predictor kit. All devices sync to the Femometer App which provides cycle predictions, ovulation tracking, and fertility insights with no subscription fees. The product line is designed for women trying to conceive, those practicing natural family planning, and health-conscious individuals seeking to understand their reproductive health.

Differentiator

Problem solved

Functional benefit

Brands

• Ring Air: Lightweight and thin smart ring for women's health tracking including sleep, heart rate, stress, and activity monitoring.
• Ring Gen2
• Ring Gen1
• Vinca 2.0
• IVY103

Products and services

• Femometer Smart Ring Gen1 Wearable smart ring that continuously tracks BBT during sleep to predict ovulation and fertility windows with 99% accuracy, IP68 waterproof, up to 10 days battery life.
• Femometer Smart Ring Gen2 Second-generation smart ring with TriNyx three-sensor BBT monitoring, 99% BBT, 98% HR, and 97% HRV accuracy, 100-meter waterproof, up to 35-day battery with wireless charging case.
• Femometer Ring Air Lightest smart ring at 3.3g with 7mm width and 2.65mm thickness, stainless steel PVD-coated outer, tri-point BBT measurements, comprehensive health tracking, no app subscription fee.
• Vinca 2.0 Basal Thermometer Bluetooth-enabled basal body thermometer with 0.09°F precision, auto-sync to Femometer app, backlit LCD display, and 3-6 months battery life.
• IVY103 Digital LH Ovulation Predictor Kit Digital ovulation predictor kit measuring LH hormone with 99.5% accuracy, reusable meter with refillable strips, AI-powered app insights, results in under 6 minutes.
• Femometer App Central digital health platform that syncs with Femometer rings and thermometers to track menstrual cycles, ovulation, fertility, sleep, heart rate, HRV, and activity with no subscription fee.
• Femometer Ring Wireless Charging Case Portable wireless charging case for Femometer Ring Gen1 and Gen2, providing up to 5 full charges in a compact 36.7g form factor.
• LH Tests Refills for IVY103 20 single-use replacement LH test strips compatible only with the IVY103 digital ovulation predictor meter.

Quantifiable outcome

• 99% accuracy in basal body temperature measurement
• +5 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

AI capability5 records

Feature6 records

Scale indicators1 record

Recent moves5 records

Expansion highlights5 records

Direct peers

• Mira: Mira offers an at-home hormone-tracking device and app for fertility, ovulation, and cycle monitoring. Comparable as a direct-to-consumer fertility diagnostics brand targeting the same trying-to-conceive consumer.
• Ava: Ava produces a fertility-tracking bracelet worn at night that captures BBT and multiple physiological signals for ovulation prediction. Closely comparable to Femometer's continuous-wear wearable approach for women trying to conceive.
• Inito: Inito produces a home fertility monitor that measures multiple hormones (Estrogen, LH, PdG) via test strips synced to a smartphone app. Direct overlap with Femometer's IVY103 LH ovulation predictor and app-based cycle insights.
• Tempdrop: Tempdrop makes an arm-worn BBT sensor that continuously collects temperature data overnight for ovulation and cycle tracking. Competes head-to-head with Femometer's ring-based continuous BBT monitoring in the TTC and fertility-awareness market.
• Natural Cycles: FDA-cleared fertility awareness app that combines BBT-based ovulation prediction with optional subscription and a dedicated thermometer. Directly comparable to Femometer's thermometer-plus-app stack for the TTC and natural family planning segments.

Emerging players

• Ultrahuman: Ultrahuman sells the Ring Air smart ring for metabolic and sleep health, expanding into cycle and fertility features. Comparable as a hardware-first smart ring with a women's-health roadmap.
• Eli Health: Eli Health is developing continuous hormone-monitoring technology that competes for the same women's reproductive-health consumer. Adjacent to Femometer's BBT approach, with potential to overlap on cycle, fertility, and perimenopause use cases.

Broad incumbents

• Clearblue: Clearblue is a dominant OTC fertility and pregnancy test brand owned by Swiss Precision Diagnostics. Directly comparable to Femometer's IVY103 ovulation predictor kits in the consumer fertility-testing retail channel.
• Oura: Oura is the leading general-purpose smart ring for sleep, readiness, and increasingly women's cycle/fertility insights. Competes with Femometer's smart ring line for the same female consumer wallet but with vastly larger brand awareness and subscription-driven revenue.
• Samsung (Galaxy Ring): Samsung's Galaxy Ring is a general-purpose health smart ring from a global consumer-electronics giant. Competes with Femometer's rings on hardware form factor and brand reach, and Samsung's entry validates the category while threatening Femometer's niche positioning.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@Femometer
• Facebookfacebook.com/femometer
• Instagraminstagram.com/femometer_ring
• TikToktiktok.com/@femometer
• Xx.com/FemometerHealth
• LinkedInlinkedin.com/company/femometer

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

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 Femometer