Real‑time, psychologically safe visibility into staff wellbeing
HiLo empowers high-stakes care teams to sustain peak performance by transforming emotional signals into visible, actionable data.
Signals arrive too late
Staff surveys are quarterly or annual. By the time results surface, people are already exhausted, disengaged, or gone.
HiLo provides real-time signaling for timely action.
Existing interventions feel like 'extra work'
Surveys, wellness checkins, apps & logins are a burden when you feel burnt out. Participation drops precisely when stress is highest.
HiLo is simple and easy: Just press 1 button. No logins, no extra time. (It's about that easy to integrate into your team workflow)
Fear suppresses honesty
Even “anonymous” tools feel risky in hierarchical clinical environments. Staff under‑report stress until it becomes acute.
HiLo sends aggregated data, so every individual's signal is safe and anonymous.
Managers lack actionable granularity
Leaders hear “burnout is high,” but not when, where, or after which shifts or events—so they can’t intervene meaningfully.
HiLo shows when signals occur, giving insight on patterns and situations.
Morale erosion is invisible until it’s systemic
Small daily stressors compound. By the time absenteeism or turnover spikes, the cultural damage is already done.
HiLo allows your team to start monitoring quickly and regularly, for time-sensitive insights.
Individual or Team use
Quick to deploy
Simple to use, no training needed
Weekly data graphs delivered to you automatically
Data can be de-identified for privacy
Small, discreet, wireless, light, easy to carry in pocket
Easily scalable
HiLo is a simple interface (button or sms) that you can give to each team member as an anonymous tool to capture positive or negative emotional states in real-time.
The hardware device has 2 buttons - green and red. Throughout the workday, you press either button to mark how you’re feeling. The system captures your input anonymously.
Once a week, it sends a detailed hour-by-hour graph that visualizes mood curves; the data is powerful for assessing emotion levels vis-a-vis triggers and solutions.
The mobile app functions similarly.
HiLo helped:
provide some catharsis in having their stress “recognized"
do quick “life-hacks” that let them quickly decrease their stressors and improve their happiness at work, e.g. bringing a full meal on longer days in clinic
realize they were arriving at work already stressed (and so focused on relaxation techniques at home)
recognize that they had more happiness at work than they had realized.
... use HiLo data to:
measure whether systemic changes (such as EMR or policy) or changes internally (such as clinic-wide wellness initiatives) have positive or negative effects across their teams
make adjustments in their clinics
more effectively advocate for systemic changes with organizational leadership.
Thank you for your interest in HiLo Pulse. Please send your inquiry using this form - or call/text (617) 399-8185.
Suvi Carlile, CoFounder & CEO
Suvi Carlile created HiLo in February 2020 at age 12, as a 7th-Grade science project called the 'Happy Button'. Curious about emotional states of her classmates, she recruited some of them to measure not only their stress, but also happiness levels over several days using a simple IoT button-set she'd made.
Two weeks after the science fair, the first Covid-19 lockdown happened. No one needs reminding of the stress that ensued, especially at healthcare facilities. Over the next year, Suvi and her dad Narath developed a more robust version of the button and ran pilots at three primary care practices in Boston. By 2022, they had brought in MIT Media Lab PhD student Patrick Chwalek to further improve the design, and recruited an advisory board.
Suvi is continuing to develop HiLo Pulse while currently also studying Psychology and Economics at the University of St. Andrews in Scotland. She is dedicated to improving the world to become a safer, happier place and hoping her work on HiLo will improve the lives of many.
Dr. Narath Carlile, CoFounder & CTO
Narath Carlile, MD MPH FAMIA is a physician, health informaticist and tech innovator whose driving vision is to elevate human flourishing in health care and beyond. Over his career, Narath has designed numerous innovations in the healthcare space, including an open source paging system for resource-poor hospitals, a clinical imaging solution, mobile decision support for community health workers, interactive voice response systems for medical clinics, and provider education tools.
Narath is an attending physician at the Brigham and Women’s Hospital in Boston, where he also serves as Director of Clinical Practice Innovation, an associate Program Director and Director of Innovation for the Internal Medicine Residency, and Associate Professor at Harvard Medical School's Informatics and Innovation Fellowship program. In addition to an MD from Dartmouth Medical School and MPH from Harvard School of Public Health, he holds a BPAS in Computer Science from York University.
LEFT: Building electronic devices in the workshop (2022). RIGHT: Suvi Carlile in February 2020 (age 12) presenting the original 'Happy Button' as a 7th-Grade science fair project.
LEFT: HiLo cofounders Narath Carlile MD MPH (left) and Suvi Carlile (right) in 2024.
RIGHT TOP: HiLo v2 (2022-24). RIGHT BOTTOM: HiLoPulse v3 (2025).
Contact
HiLo Pulse, c/o Carlile LLC
1 Broadway, 14th Floor
Cambridge MA 02142
(617) 399-8185