Clinical Holter
Reliable information, but ten electrodes, cables, a separate recorder, and multiple hospital visits disrupt daily life.
Accurate · difficult to live withHealthcare · Hardware + App · 2021–2022
Daywell
ECG
Making medical monitoring easier to live with.
Three nodes · wireless monitoring · one mobile experience01 · The opportunity
Medical-grade information should not require people to put life on hold.
Daywell explored how a wireless multi-lead ECG system could make longer-term monitoring more comfortable, portable, and easier to operate outside the hospital.
02 · Market gap
Each existing option solved only part of the problem.
Single-lead patch
More wearable, but one channel provides limited information for locating and diagnosing an issue.
Wearable · limited signal contextQuick checks
Handheld devices can capture a short reading, but require active contact and do not support long-term monitoring.
Accessible · momentaryResearch evidence · Persona
A real routine made the design problem tangible.
Jay represented an urban professional whose symptoms were easy to miss and whose schedule made repeated hospital visits difficult. His story kept the team focused on access, reassurance, and everyday usability.
Original project artifact · retained from the 2021 research phase
03 · User research
Busy adults needed access, reassurance, and less disruption.
The research focused on people concerned about their heart health but constrained by long working hours, hospital access, and the practical burden of conventional monitoring.
“I need to understand what happened — without turning monitoring into another full-time task.”
- 01 Start monitoring with less waiting and setup
- 02 Wear the system comfortably through normal routines
- 03 Receive a reliable report without another complex journey
04 · Product system
Three nodes create a body-area network. One node becomes the host.
013 nodesCapture three-channel ECG signals
→02AlgorithmDerive a twelve-lead waveform
→03MobileConnect, record, review, and report
05 · Pivotal decision
Remove the separate host. Make each part easier to wear.
The initial concept stored three nodes and a dedicated host in a charging case. It worked functionally, but portability suffered.
Before3 nodes + separate host→After1 node acts as host
The redesign reduced volume, integrated two wing electrodes into each patch, and connected the host node to the phone through Bluetooth.
06 · Mobile experience · Structure
The structure came before the polish.
The wireframes established one continuous journey: prepare the account, pair all three nodes, understand placement, record with confidence, and return to a report.
Ask only for what the next step needs.
Make three-node readiness understandable at a glance.
Carry the same mental model from placement to report.
WireframeInformation hierarchy
→Validate the flow.Refine the feedback.→
PrototypeInteraction + visual confidence
06 · Mobile experience · Prototype
The same flow, resolved into a calmer product experience.
The prototype kept the wireframe architecture, then added clearer connection feedback, focused recording states, and a visual language that makes the medical system feel less intimidating.
PairThree-node status becomes immediate confirmation.RecordLive signals stay central, without competing actions.ReviewReports remain part of the same continuous journey.
06 · Mobile experience · Key interactions
Three moments carry the experience from setup to insight.
Each interaction answers one practical question: Is everything connected? Can I trust the recording? Where do I find the result?
01 · Pair
One-click pairing
Bring the node close to the phone and confirm all three connections at a glance.
02 · Record
Focused monitoring
Keep live rhythm, heart rate, and lead switching together in one readable state.
03 · Review
Reports in context
Move from recording history to report status without leaving the product journey.
Final proposalA complete visual system,
seen as one continuous experience.
seen as one continuous experience.
06 · Mobile experience
The app makes a technical system feel approachable.
One-click pairing
Use NFC to connect the phone with all three nodes with less setup friction.
Lead mode changes
Move between ECG views while keeping the monitoring session understandable.
Report access
Bring recording history and diagnosis reports into the same mobile flow.
07 · Usability signal
Ask for less before asking for trust.
In a five-participant usability study, personal-information requirements created friction during onboarding.
08 · Takeaway
My contribution connected the hardware, service, and interface into one product story.
I worked across software and hardware product management, research, industrial design, and UX. The project strengthened my ability to make product decisions across technical constraints and human needs — especially where comfort, clarity, and trust matter.