Client // DESIGNATION Labs
Industry // Wearable health technology
Project // iOS heart health application
Role // UX Designer & Researcher
Time // 3-week sprint


Pulseband is a hypothetical wearable device designed to monitor and promote a healthy heart. Equipped with blood pressure, blood oxygen saturation, and heart activity measuring capabilities, Pulseband straddles the divide between a fitness wearable and medical device. The device is oriented towards older users who are at risk or living with heart conditions. Our 3-person team (2 UX and a UI designer) was tasked with developing an iOS companion application. 


We started with an exploratory research plan, developed interview guides, and created proto-personas to determine the groups of users we would target. Our team conducted, tagged, and analyzed 18 user interviews. Interviewees fell into categories such as: at-risk, has heart condition, caretakers, and medical professionals.

I also did an in-depth competitive analysis of existing heart-related medical devices, fitness wearables, and relevant companion apps. This analysis helped us determine where we wanted Pulseband to fit on the spectrum between a fitness tool and a medical device. 


From user data, we determined that Pulseband needed to:

  • Give users “one less thing to worry about
  • Be so easily understandable that each screen can be understood in 3-seconds
  • All data should included recommended actions

We distilled our data into user personas that captured the range of motivations, mental models, and behaviors we encountered in interviewees. These personas came alive in our discussions of app features and user experiences.


User scenarios and flows proved to be the cornerstone of our UX process. We storyboarded out nine true-to-life scenarios. These flows were translated into core functionalities, and then were built into an application map. 

Paper prototyping allowed us to quickly ideate and refine our app map. I utilized POP to create screen flows, enabling us to make decisions around navigation, data representation, and interface patterns. 

Along the way we kept our design principles of less worry, understandable, and actionable in mind. 


Using AxureRP, our team created over 95 screen wireframes of key tasks such as onboarding, emergency response, data visualization, goal setting, and more. 

Based on user feedback, I iterated on these screens and worked to clarify issues around data navigation and user flow. 

Our team also created a product roadmap for the development of future functionalities.