Case Study

Johnson & Johnson
MyRhythm Digestive Health App

Designing a women-centric mobile app that empowers users to track symptoms, identify dietary triggers, and take control of their digestive health.

Client
Johnson & Johnson
Product
MyRhythm App
Role
UX Designer
Platforms
iOS & Android

The Challenge

Digestive health issues — including conditions like IBS and acid reflux — affect millions of people worldwide. Johnson & Johnson identified a gap in user-friendly tools that empower individuals to manage these conditions through tracking and lifestyle adjustments.

The company sought to design a mobile app that allows users to track symptoms, identify dietary and lifestyle triggers, and receive guidance for better gut health — all within an experience specifically designed for women.

Objectives

  1. User Empowerment Provide an intuitive interface for logging symptoms, diet, and lifestyle factors that affect digestive health.
  2. Personalized Insights Leverage tracking data to surface actionable tips and help users make informed lifestyle choices.
  3. Brand Engagement Incorporate educational content and relevant J&J products in a way that adds value without overwhelming the experience.
  4. Data Privacy & Security Ensure users feel comfortable sharing health data through clear communication on security and privacy controls.

Research & Discovery

I conducted in-depth user research to understand the experiences and needs of individuals dealing with digestive health issues. Through interviews and surveys with a diverse group of potential users, several common challenges emerged.

Key Findings

Users struggled to identify dietary or lifestyle patterns triggering symptoms. They wanted simple, consistent tracking that didn't feel overwhelming. They also desired reliable health information along with relevant product recommendations.

Based on this research, I established core personas representing users with different digestive health needs. I also mapped multiple user flows — from quick symptom logging to deeper discovery paths — ensuring the app could serve users at different engagement levels.

Key Features

Easy, Quick Logging

A streamlined process for tracking symptoms, meals, and lifestyle factors — designed for daily use without friction.

Trends & Reports

Color-coded charts and visual cues to quickly highlight correlations between diet, symptoms, and lifestyle.

Personalized Content Hub

Articles, recipes, and product recommendations tailored to the user's tracked data and health interests.

Reminders & Nudges

Gentle notifications to maintain consistency with logging, hydration, and self-care activities.

Design & Prototyping

The design phase focused on creating an intuitive interface with accessible features to encourage sustained engagement. Using a mobile-first approach, I crafted wireframes and a prototype that went through several rounds of usability testing.

Simple, Clean Interface

I minimized cognitive load by focusing on essential features and avoiding clutter. Every screen served a clear purpose.

Friendly, Supportive Tone

The app's voice was encouraging and empathetic, reducing anxiety around digestive health — a sensitive topic for many users.

Visual Insights

Color-coded charts were designed to quickly highlight correlations without requiring users to interpret raw data.

Accessible Navigation

A clear navigation structure let users easily switch between logging, viewing reports, and exploring content. Data security was prioritized throughout. I ensured users understood how their data would be handled and had the option to anonymize or opt out of sharing for research purposes.

Development & Testing

The development team adopted a cross-platform approach using J&J's industry-grade CMS and authoring tools, ensuring seamless functionality on both iOS and Android while minimizing development costs.

A beta version was launched to gather initial feedback. Testing focused on ease of use, engagement with personalized insights, and whether users felt secure about their data privacy. Based on feedback, I made adjustments to layout, data visualization clarity, and the onboarding process to ensure users could navigate confidently from their first session.

Results

60% Retention Rate

Achieved in the first three months, with most users regularly logging symptoms and lifestyle factors.

85%+ Positive Ratings

Users appreciated the app's ease of use and the value of personalized insights.

High Content Engagement

The content hub saw strong engagement, with users actively exploring educational content and product recommendations.

Data-Driven Product Insights

Anonymized user data contributed valuable insights to guide J&J's future product development.

Key Learnings

Start with user needs. Focusing on specific challenges avoided unnecessary complexity and created a tool that provided real value in managing a sensitive health topic.

Value-driven design. Keeping users' goals front and center enabled features that supported genuine health management rather than superficial engagement.

Transparent privacy communication. Clear messaging around data security earned trust and encouraged the data-sharing that powered research initiatives.

Reflection

MyRhythm reinforced my belief that the most impactful health tools reduce anxiety around a topic, meet users where they are, and provide actionable insights without overwhelming them. The balance between serving user needs and supporting brand engagement was a design challenge I found particularly rewarding to navigate.