Samsung Cardioband
Voice of the body
R&D, UX/UI, Motion, Branding
2019-2020
Designed the companion app for an ECG wristband—simplifying how people record heart activity and understand their results.
Overview
Heart disease is the leading cause of death in the U.S., and existing tools for long-term ECG tracking were limited. At Samsung’s Digital Health team, I designed the companion app for CardioBand, an FDA 510k-cleared ECG monitoring band. The app enabled users to detect arrhythmias, track long-term heart activity, and screen for atrial fibrillation (AFib)—bringing advanced clinical monitoring into a consumer-friendly experience.
Mission
I joined the Digital Health team with the goal of using design to make a tangible impact on people’s lives. My work focused on turning complex medical technology into experiences that patients could trust and use with confidence.
My Role & Team
As a Product Designer, I collaborated closely with engineers, clinicians, and researchers to ensure a seamless integration of design, medical accuracy, and usability—bridging the gap between clinical standards and everyday user experience.
Research
We ran three rounds of user testing (10–15 participants each), focusing on onboarding and ECG spot check flows. These studies uncovered the most critical usability issues and directly informed design and engineering decisions—leading to a final validation study where all key tasks passed with high confidence.
Problems
Users struggled without a display on the band, making it difficult to understand device status.
Instruction guides were often overlooked, especially by older participants.
Solutions
Shifted focus to the companion app as the primary interface, providing real-time data and guidance.
Designed clear visual indicators and app-based feedback to replace missing hardware cues.
ECG Spot check - Feature
Checking ECG quickly was critical for patients with AFib, but existing flows were complex. I redesigned the home screen so users could start a spot check with a single tap—either on the band or through the companion app.
This reduced friction and made heart monitoring accessible and reassuring for everyday use.
Reports
Patients and doctors needed an easy way to track heart health trends and share accurate data.
I designed daily, monthly, and yearly ECG reports within the app, with clear visualizations of heart rate patterns.
Users could export or email PDF reports directly to physicians, making clinical communication faster and more reliable.
Goal
Outcome
After multiple rounds of testing and design iteration, CardioBand successfully obtained FDA clearance.
This achievement validated both its clinical reliability and usability, and the ECG feature was later integrated into the Samsung Galaxy Watch (2022)—bringing advanced heart monitoring to millions of users worldwide.
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