stars 1 stars 2 stars 3

View Heart Sync's top competitors like BRAINMASTER TECHNOLOGIES, INC., BrainTime LLC, and Calm.

Calm
Calm is a leading mental health company on a mission to support everyone on every step of their mental health journey. Our flagship consumer app—ranked #1 in its category with over 180 million downloads and available in seven languages across nearly 190 countries—helps people sleep better, stress less, and live more mindfully through content and tools from experts and beloved celebrity voices. Since our launch, we’ve expanded our offerings with Calm Sleep, an app providing deeper, personalized sleep support, and Calm Health, an evidence-based digital solution offered through employers, health plans, and providers to expand access, boost benefits engagement, and drive positive health outcomes. Today, Calm supports more than 3,500 organizations and reaches over 26 million covered lives through Calm Health. Recognized as a TIME100 Most Influential Company and one of Fast Company’s Brands That Matter, Calm was co-founded by Alex Tew (Million Dollar Homepage) and Michael Acton Smith (Mind Candy, Moshi Monsters, Firebox).
San Francisco, California, US
Private
$65.1M Revenue
http://www.calm.com
734 Employees
HeartMath LLC
HeartMath is recognized as one of the world’s foremost authorities on emotional physiology, workplace stress and optimal employee performance. As a cutting-edge performance company, they offer a range of unique services, products, and technologies to improve health and well-being, while dramatically reducing stress and boosting performance and productivity. HeartMath offers highly effective, practical solutions for increasing employee performance, reducing workplace stress, anxiety, depression and sleeplessness, and increasing resilience, productivity and performance. HeartMath certification programs offer corporations, healthcare professionals, health care institutions, leadership, human resources and staff development trainers, wellness, lifestyle, and sports coaches and personal and professional mentors a highly desirable skill set that can position themselves for client growth. HeartMath’s award-winning Inner Balance and emWave technologies have more than 300,000 users. Most recently, HeartMath released their free HeartCloud™ platform where customers can synch session data in one location, earn practice rewards and more. HeartMath Inc., organizational clients include Duke Medicine, Stanford Business School, Stanford Hospital, Blue Cross Blue Shield, Sutter Health, the Gottman Institute, Scripps Center for Integrative Medicine, Kaiser Permanente, Cisco Systems, and Boeing.
Boulder Creek, California, US
Private
$25.2M Revenue
http://www.heartmath.com
192 Employees
NeurOptimal® is an advanced neuro-technology that offers training to the brain, enabling it to function at its best. It’s mathematically designed to communicate directly with your central nervous system and has been called “the most effective bio-hack on this planet”. Hype aside however, NeurOptimal® does have a long and venerable history with well over THREE MILLION HOURS of safe and effective usage, and it is celebrating its seventeenth year this year! NeurOptimal® was developed by Clinical Psychologists Drs. Valdeane and Susan Brown, Founders of Zengar Institute Inc. It utilizes an original Dynamical Neurofeedback® algorithm developed by the Drs. Brown, which is exclusive to NeurOptimal®. This innovative form of neurofeedback is not a medical treatment, but instead is a TRAINING for the brain. It does not require diagnosis, but rather it dances micro-second by micro-second with your brain offering it the information it needs to RE-ORGANIZE ITSELF. And when your brain does that, a whole lot of complaints drop away. You feel calmer, clearer, happier and able to function better in your life. It doesn’t matter where you are starting from — EVERY brain can enjoy meeting its own state of optimal. And training is absolutely effortless. You can relax, close your eyes and even zone out if you want. And if you don’t want to relax, that’s fine too! Incredibly simple to learn and to operate, all the expertise has been built right in. Technically, no special qualifications are needed to use the NeurOptimal® program. NeurOptimal® is used by organizations, professionals in their practices and businesses, and families at using it at home. Together, we form a close-knit community that spans multiple continents. Furthermore, Zengar is committed to offering outstanding support for its users, as well as an on-going investment in Research and Development to carry its users into the future.
Waterloo, CA
Private
$22M Revenue
http://www.neuroptimal.com
59 Employees
Learn More
How It Works
get free account
Get a Free Account
Sign up for a free account. No credit card required. Up to 5 free lookups.
search page
Search the #1 Contact Database
Get contact details of over 700M profiles across 60M companies – all with industry-leading accuracy. Sales and Recruiter users, try out our Email Finder Extension.
get contact page
Use our AI-Powered Email Finder
Find business and personal emails and mobile phone numbers with exclusive coverage across niche job titles, industries, and more for unparalleled targeting. Also available via our Contact Data API.
G2 Leader Summer 2026 G2 Best Est ROI Mid-Market Summer 2026 G2 Easiest Admin Mid-Market Summer 2026 G2 Most Implementable Summer 2026 G2 Best Results Mid-Market Summer 2026 G2 Lead Capture Mid-Market Summer 2026 Inc Fastest Growing Private Companies 2026 Inc Best Workplace 2025
g2crowd
G2Crowd Trusted
chromestore
300K+ Plugin Users