Aman Nagina Product UX/UI Designer

Case Study · Web / iPad App

Ralux - On Demand (Ear Testing)

Ralux is a tablet app enabling employees to self-administer on-demand hearing tests at their facility using a handheld audiometer.

Role

Product Designer

Timeline

8 Weeks

Platform

Web · iPad App

Problem

Redesign the Ralux app flow to make it simple and intuitive for users with low tech literacy, limited education, or visual/hearing challenges (e.g., factory/construction workers). Focus on visual cues, minimal text, and easy navigation for independent hearing tests.

Outcome

Redesigned the app, simplified for the targeted users. Through research and testing, I created an intuitive interface with visual cues, minimal text, and easy navigation, enabling users to independently conduct hearing tests. The result is a highly accessible, user-friendly app.

User Research

Insights and Analysis

Got the data from the client, then interviewed 5-6 people who matched the actual user profile. Talking to them directly made clear what the numbers couldn't - where the real confusion was happening, and why. Key findings include:

62%

of users struggle to navigate through the designs and frequently require assistance from technicians. (client data)

6 out of 8 technicians reported difficulty starting tests with the current interface, finding the flow unintuitive and frustrating. New technicians often express concerns about the outdated design, which lacks clear navigation and user-centric elements.

30%

of Users Fall Within the 40-70 Age Range
(client data)

Many of whom are unfamiliar with mobile devices and tablets. This creates navigation challenges, emphasizing the need for a simplified, intuitive design.

2/6

of individuals from Interview couldn’t move past login (client data)

While the remaining 4 logged in but couldn’t complete the test. This reveals critical usability issues in both the login and testing phases.

Before

Overloaded text, unclear navigation, buried actions, and cluttered controls confused users.

After

Streamlined text, intuitive icons/buttons, clear hierarchy, and minimal layout guide users effortlessly

(Technician’s screen)

After

Fix: Neutral colors, Physical form like boxes to give familiar experience, and concise, empathetic instructions to ensure inclusivity.

Before

Issue: Red/Green "Yes/No" buttons (e.g., red for "Yes" on sensitive questions like hearing loss) risk stigmatizing users, feeling exclusionary. Needs UI fixes and clear instructions.

Issue: Red/Green “Yes/No” buttons (e.g., red for “Yes” on sensitive questions like hearing loss) risk stigmatizing users, feeling exclusionary. Needs UI fixes and clear instructions.

(Participant’s screen)

After

Spot-on title with reference image and clear instructions; replaced the next button with more relevant text.

Before

Overwhelming instructions to read, Needs clear UI and

better navigation for users

Overwhelming instructions to read, Needs clear UI and

better navigation for users

(Participant’s screen)

After

Clear instructions with highlighted navigation and reference to the button. High-contrast title in yellow and black so users don't skip without reading.

Clear instructions with highlighted navigation and reference to the button. High-contrast title in yellow and black so users don’t skip without reading.

Before

Overwhelming instructions to read, Needs clear UI and

better UX for the users who are having difficulties using the app.

Overwhelming instructions to read, Needs clear UI and

better UX for the users who are having difficulties using the app.

(Participant’s screen)

After

Just one button which looks like buzzer, Users can see this is actually a button to press. When pressed there’ll be a vibration with gestures.

Before

Small text with Ear Icon, Users with low vision may not be able to read, Unnecessary header and titles.

(Participant’s screen)

Collected feedback from clients and end-users to find where things broke down. Then fixed the specific problems - clearer navigation, stronger visual cues, less text where images could do the job.

Usability Testing and Solutions

[Highlighting major changes]

Final Designs

With Comprehensive User Flows

The design went through multiple rounds of feedback before it felt right. Each flow - from login to test completion - is structured so users can move through it without stopping to think. The result is a product that works for people who've never touched a tablet before.

Ralux - On Demand (Ear Testing)

Insights and Analysis

62%

of users struggle to navigate through the designs and frequently require assistance from technicians. (client data)

30%

of Users Fall Within the 40-70 Age Range(client data)

2/6

of individuals from Interview couldn’t move past login (client data)

of Users Fall Within the 40-70 Age Range
(client data)