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Mobile App Design

From sports injuries to slips, trips and falls – any knock on the head can lead to a concussion. It can take just ten minutes to diagnose, but the recovery itself isn’t always as straightforward.

Project Overview

For this project, I was responsible for conceptualizing and designing an MVP mobile app for our client, Rhea, which was to be used for their clinical trials. I worked closely with their founder, our two full-stack developers throughout this project and later on their brander to finalize the design.

The Problem

There’s such a complicated range of concussion symptoms that there’s no one-size-fits-all approach. The traditional advice was to prescribe rest and darkness, then wait and see. But the longer it takes the brain to recover, the more of an impact it has on someone’s work, social life and emotional wellbeing.


Product Designer


Six Months


Figma, Lookback

Our Solution

Rhea is a rehabilitation platform that’s grounded in science and uses prescribed physical exercises to heal and care for the brain.


01. Define

Starting Point

To start things off, it was crucial for our team to familiarize ourselves with the problem Rhea was looking to solve. Through a series of discussions and white-board sessions with the founder, we are able to get an idea of the app’s direction and requirements.


Persona Development

Based on the discussions above, I was able to put together a persona.



After identifying a persona, I shifted my focus to how users would interact with the app. This allowed me to develop an initial guideline for the subsequent design.

User Taskflow.png

02. Ideation

Preliminary Sketching

The visual design began to take form by sketching the core features. This helped visualize and communicate my ideas to the client.



Before jumping to digital wireframes, I reviewed and finalized the wireflows to ensure users were able to navigate and experience the core features of the app.


Information Architecture

Information Architecture.png

03. Initial Design & Iterations

Digital Wireframes


High-Fidelity Prototype

I opted to go with a higher fidelity prototype to provide the feel of the real thing when being tested. Since the branding was not yet finalized, I stuck with a simple dark-themed interface.

Usability Testing

I conducted a total of 2 rounds of in-person usability testing.

First round: I tested with family and friends who have received a concussion in the past. This round was to test whether users were able to complete basic tasks. I was able flush out any points of friction and confusion early before moving to real patients.

Second round: I conducted a 6-week usability testing round with 12 patients from our client’s clinic who were suffering from concussion.


These were some of iterations made to the app before finalizing the design with the our client’s brander.

Issue #1

Initially, users assessed their symptoms through one, long scrolling page. Because there were so many symptoms to select from, particpants found one page too overwhelming.

Solution: I re-designed the experience by asking preliminary questions pertaining to specific symptoms. This determined whether or not to display a subsequent list of categorized symptoms.


Issue #2

When following the circuit training, participants were having a hard time following the exercises when the phone was placed from a further distance.

Solution: I created a responsive landscape-version design of the circuit training section. This improved the participants ability to follow the sessions from afar.


04. Final Design & Learnings


Get a Tailored Rehabilitation Strategy

Once we build a picture of your symptoms, you’ll receive a tailored rehabilitation strategy with daily exercises just for you.


Interactive Daily Exercises

Each exercise comes with an interactive video, so you can manage your own treatment plan and always know what to do next.

Track your progress

Recovering from concussion isn’t a linear progress. We monitor your symptoms and wearable data between key milestones and automatically adjust your rehabilitation depending on your progress.


Style Guide


Learnings From This Project


This project made me aware of the amount of preparation and effort user interviews require. From having the tasks and questions ready to observing the participants and analyzing the data – this part of the design process is definitely something not to be underestimated.


When building the high-fidelity prototype, I focused on sticking with a design system. This helped me keep consistency across all screens, design more efficiently and reduce the risk of creating potential confusion within the app.


This project was a great experience for me on how to stay on the same page with the client and their stakeholders . There were times where I had to push-back on specific requests. This is where I had to make sure to communicate properly the importance of sticking to the agreed upon scope and timeline of the project.

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