What Welltory does

Welltory is a digital health company founded in 2016 and headquartered in Redwood City, California. It builds AI-powered wellness applications that analyze heart rate variability (HRV) via proprietary photoplethysmography (PPG) signal processing — capturing data through a smartphone camera or supported wearables (Apple Watch, Samsung, Garmin, Polar, Fitbit, Huawei) — to surface personalized insights on stress, energy, recovery, sleep, and blood pressure. The company's algorithmic stack is validated against medical-grade chest straps (Polar H7), supported by five HRV patents, peer-reviewed publications in IEEE and ScienceDirect, and IRB-approved research collaborations with more than 30 universities including Harvard Medical School, Johns Hopkins University, and UCL.

The platform serves two customer bases. The consumer product is a freemium mobile app distributed through the Apple App Store, Google Play, Huawei AppGallery, and Samsung Galaxy Store, with a free tier and a Premium subscription priced at $99 per year or $599 for a Lifetime license; Premium unlocks 21+ metrics, detailed blood pressure analysis, lifelogging, focus/attention analytics, and personalized insights. As of 2026 the app reports 17 million users across 136 countries, 12 million HRV measurements processed monthly, and 290,000+ five-star ratings. The B2B arm — Welltory for Research — sells multi-seat, HIPAA- and GDPR-compliant, IRB-approved research licenses to academic and corporate partners, exporting both raw and processed HRV data for studies in stress, sleep, sports performance, Alzheimer's caregiving, COVID-19 prediction, and chronic-condition populations. The ELC Lab community program, launched in May 2026, extends the product into the chronic-conditions vertical (Long COVID, ME/CFS, fibromyalgia, POTS).

Revenue is generated through Premium consumer subscriptions and quote-based research licenses, supplemented by a $3 million credit facility from Braavo Capital closed in September 2024 and a $2 million Braavo round in November 2025. The company has raised approximately $5 million in disclosed equity funding (2016: $1M; 2017: $1M seed; 2021: $3M) across rounds whose investor identities are not publicly disclosed, and explicitly commits to never selling user data. Welltory ranked #31 in Deloitte's San Francisco Bay Area Technology Fast 500 in February 2025 on 70% year-over-year revenue growth, and the company is led by founder and CEO Jane Smorodnikova with a 140+ person team spanning scientists, an MD, and a dedicated Head of AI.

Name

Welltory

Legal name

Welltory Inc.

Website

https://welltory.com

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

101–250 employees

Short description

Welltory is a digital health company that uses proprietary heart rate variability (HRV) analysis via smartphone cameras and wearables to deliver AI-powered stress, energy, sleep, and recovery insights. Its freemium app serves 17M+ consumers while research licenses support 30+ universities.

Ownership category

akta.pro rank

Product category

Digital Health & Wellness Analytics

NAICS

Scientific Research and Development Services (5417)

SIC

Services-Commercial Physical & Biological Research (8731)

akta.pro primary industry

Cardiometabolic RPM & Chronic Disease Management (diabetes, hypertension, CHF, obesity) (HLALAFAA)

akta.pro secondary industries

Clinical Trial Analytics, Risk-Based Monitoring (RBM) & Quality Management (HLACAOAI), Hypertension & Ambulatory Blood Pressure Care (HLAKABAH)

Keywords

• HRV analysis software
• Digital wellness app
• Wearable health monitoring
• Stress management platform
• Biomarker analytics

Headquarters

HQ city

Redwood City

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B and B2C

Offering type

Software

Cost components

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

Revenue model

1. Welltory Premium subscription (Annual and Lifetime): Primary consumer revenue stream: a freemium mobile app where basic features are free and Premium is sold as either an auto-renewing Annual subscription ($99/year, equivalent to $8.25/month) or a one-time Lifetime license ($599). Premium unlocks 21+ metrics, detailed blood pressure analysis, sleep insights, workout analytics, lifelogging, and personalized research-paper-style insights. Subscriptions are the company's sole revenue source for consumer products and renew automatically monthly, annually, or once for Lifetime.
2. Research licenses (B2B): Welltory sells multi-seat research licenses to universities, research institutions, and corporate partners, providing free iOS/Android Premium app access to participants, raw and processed HRV data exports, and up to 12 months of research support. Pricing is quote-based rather than publicly disclosed; the offering is anchored to the B2B partner relationships highlighted on the For Research page.
3. Debt financing (credit facility): Welltory has supplemented equity and operating revenue with debt capital, closing a $3 million credit facility from Braavo Capital in 2024 to fund platform expansion, new algorithms, AI, and research.

Pricing tiers

Go-to-market motion4 records

Distribution channels5 records

Marketing channels8 records

Core offering

Welltory operates a consumer health intelligence app that uses proprietary PPG-based heart rate variability measurement (via smartphone camera or connected wearables) to convert 100+ biomarkers into personalized insights on stress, energy, recovery, sleep, and blood pressure. The company also sells a separate research-grade platform, Welltory for Research, that exports raw and processed HRV data under HIPAA, GDPR, and Pearl IRB compliance to academic and corporate research partners. Revenue is driven by freemium app subscriptions (Premium Annual $99 / Lifetime $599) and quote-based B2B research licenses.

Product overview

Welltory is a single unified health intelligence app with a Premium subscription tier layered on top, supported by a separate research-licensing platform. The core Welltory app ingests HRV (via phone-camera PPG, Polar, Apple Watch, Samsung HRM, Fitbit, Garmin, Galaxy Watch) and health-platform data (Apple Health, Google Fit, Samsung Health) and turns 100+ biomarkers into personalized reports surfaced through the Today Screen, Insights cards, and the Self-Discovery Experiment. Paid Welltory Premium unlocks the 21-metric detailed heartbeat analytics, focus/attention analytics with RescueTime/Instagram/GitHub/Spotify sync, lifelogging, geotracking, and clinically validated tests. Alongside the consumer app, Welltory for Research offers an IRB-approved, HIPAA- and GDPR-compliant platform that exports raw and processed HRV data to academic partners. The ELC Lab community program extends Welltory's product line to people living with chronic energy-limiting conditions such as Long COVID, ME/CFS, fibromyalgia, and POTS.

Differentiator

Problem solved

Functional benefit

Brands

• ELC Lab: Welltory's first community program designed for people with chronic conditions such as Long COVID, ME/CFS, fibromyalgia, and POTS.
• Insights
• Self-Discovery Experiment

Products and services

• Welltory (core consumer app) An all-in-one health intelligence app for consumers that turns 100+ biomarkers (HRV, stress, energy, recovery, blood pressure, sleep, activity) into personalized narrative insights via proprietary PPG-based algorithms validated through peer-reviewed research.
• Welltory for Research A research-grade HRV analysis platform for universities, research institutions, and corporate partners offering short- and long-term PPG/ECG measurements, an extended dataset with 19 key metrics, raw and processed data export, and up to 12 months of research support.

Quantifiable outcome

• ~0.77 cross-validated AUC for PEM pattern detection across 45,484 users
• +4 more outcomes

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration14 records

AI capability10 records

Feature7 records

Partnerships

17 partnerships are on record, tiered flagship, core and minor.

• Harvard Medical SchoolflagshipStrategic or Co-development PartnerHarvard Medical School is listed as a research institution that Welltory has partnered with; it appears on the homepage trust strip and in the 10-year anniversary press release alongside Johns Hopkins University and Arizona State University. Welltory cites this collaboration as part of its research pedigree.
• Johns Hopkins UniversityflagshipStrategic or Co-development PartnerJohns Hopkins University is one of the named research collaborators in Welltory's 10-year anniversary announcement and is listed on the homepage trust strip. It has been part of the 30+ universities using Welltory for research since at least 2022.
• Arizona State UniversityflagshipStrategic or Co-development PartnerArizona State University is named in Welltory's 10-year anniversary press release as a research partner, alongside Harvard Medical School and Johns Hopkins. It is also visible on the homepage trust strip.
• University College London (UCL)flagshipStrategic or Co-development PartnerUCL is one of the most-cited research partners for Welltory, used as a stress detection and management app in studies including a 20-participant study on action planning in personal informatics. Welltory's technology has been used for research at UCL since 2018.
• Texas UniversitycoreStrategic or Co-development PartnerTexas University is one of the universities using the Welltory app for research; a published study examined the effect of a campus therapy dog on nursing student stress using Welltory as the HRV measurement tool.
• Calm meditation appcoreStrategic or Co-development PartnerWelltory partnered with Calm meditation app in 2020, integrating its breathing practices and mindfulness content into the Welltory ecosystem as part of its expanded health and wellness offering.
• Apple Watch (Apple)flagshipTechnology or IntegrationApple Watch is Welltory's primary wearable integration; Welltory builds dedicated Apple Watch HRV and stress analysis features, sleep analysis, the Self-Discovery Experiment, and AI algorithms adapted for Apple Watch HRV analysis. Distribution is via the App Store.
• Samsung Galaxy WatchcoreTechnology or IntegrationWelltory supports Samsung Galaxy Watch and Samsung Health for HRV, heart rate, and stress monitoring; available on the Galaxy Store and via the Samsung HRM BLE protocol.
• GarmincoreTechnology or IntegrationWelltory supports Garmin watches for heart rate monitoring and HRV tracking, with dedicated pages for Garmin Heart Rate Monitor and Garmin HRV apps.
• Polar (H7 chest strap)coreTechnology or IntegrationWelltory supports Polar BLE heart rate monitors (including the Polar H7 chest strap) and has been benchmarked against it in published validation studies showing parity in HRV measurement accuracy.
• FitbitcoreTechnology or IntegrationWelltory has a dedicated Fitbit HRV App integration page, allowing Fitbit users to bring heart rate variability data into Welltory for analysis.
• RescueTimecoreTechnology or IntegrationRescueTime is integrated as a Premium feature in Welltory, allowing users to sync productivity data and see how screen-time habits and work hours affect their stress, energy, and mood.
• Apple Health, Google Fit, Samsung HealthcoreTechnology or IntegrationWelltory reads hundreds of charts from Apple Health, Google Fit, and Samsung Health data to power its analysis and integrate workout, sleep, and self-monitoring features.
• Apple Music and SpotifyminorGTM or Marketing PartnerWelltory distributes its free science-backed meditation album 'Ambient Space Travels' on Apple Music and Spotify as part of a broader content and brand-awareness effort.
• PubMed, Nature, MDPI, NIHminorOthersWelltory references PubMed (25,000+ HRV studies), Nature, MDPI, and the National Institutes of Health (NIH) on its homepage trust strip as validation of its scientific foundations and publication venues.
• ForbesminorGTM or Marketing PartnerForbes is featured on the homepage trust strip as a media outlet that has featured Welltory.
• DeloitteminorOthersDeloitte is listed on the homepage trust strip in connection with Welltory's #31 ranking in the 2025 SF Bay Area Technology Fast 500.

Scale indicators22 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Whoop: Whoop is a subscription-based wearable and app focused on HRV, recovery, sleep, and strain tracking for athletes and high-performers. It is the most direct commercial competitor to Welltory in the consumer HRV/recovery space, though tied to Whoop's own hardware.
• Oura: Oura sells a smart ring and companion app for HRV, sleep, readiness, and recovery scoring with a Premium subscription. Comparable to Welltory on the HRV/recovery/sleep proposition and subscription model, though Oura is hardware-anchored.
• Elite HRV: Elite HRV is a consumer HRV analysis app that pairs with chest straps and wearables to deliver readiness, stress, and recovery scores. Closest direct competitor to Welltory on a software-only, HRV-first basis without proprietary hardware.
• HRV4Training: HRV4Training is a smartphone-camera-based HRV measurement app for athletes and coaches, with research-grade validity. It overlaps directly with Welltory's PPG camera approach and validated HRV methodology.

Broad incumbents

• Garmin Connect: Garmin's Connect platform delivers native HRV, stress, sleep, Body Battery, and recovery features to a large installed base of Garmin wearables. As a hardware-and-software incumbent, it competes with Welltory at the platform layer and is also a key integration partner.
• Apple Health: Apple Health aggregates HRV, heart rate, sleep, and activity from Apple Watch and other sources and is increasingly surfacing its own insights. It is both a key integration channel for Welltory and a platform-level incumbent that ships comparable features for free.
• Fitbit (Google): Fitbit, owned by Google, offers built-in HRV, stress, sleep, and readiness scores via its app and wearables. Like Apple Health and Garmin, it is both a distribution partner for Welltory and a platform incumbent with overlapping functionality.

Emerging players

• Calm: Calm is a subscription meditation, sleep, and mental wellness app that overlaps with Welltory on the stress, sleep, and recovery experiences (and was an explicit Welltory partner in 2020). Comparable consumer wellness and subscription DNA, but more content-led than data-led.
• Headspace: Headspace is a subscription mindfulness, sleep, and mental health app with employer and health-plan distribution. Comparable to Welltory on the consumer wellness subscription model and the stress/sleep/mental health theme, though more focused on content than biometrics.

Others

• Biofourmis: Biofourmis is a clinical-grade wearable and AI platform for remote monitoring, post-acute care, and clinical trial endpoints. Thematically comparable to Welltory for Research given its focus on validated physiological biomarkers and B2B healthcare contracts.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/welltory
• GitHubgithub.com/Welltory
• Facebookfacebook.com/welltory
• LinkedInlinkedin.com/company/welltory
• Instagraminstagram.com/welltory

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Subsidiaries1 record

Funding overview

Funding rounds10 records

Investors8 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 Welltory