A habit-driven wellness app for healthy weight gain

Build Me Up addresses a gap in the wellness market by focusing on healthy weight gain, a goal often overlooked by mainstream health apps. Through user-centered design and behavioral psychology principles, I created an engaging experience that motivates users to build consistent habits, track progress meaningfully, and feel supported throughout their journey. The app combines practical tracking tools with emotional intelligence to create a truly holistic wellness solution.

Build Me Up App

Build Me Up App

Role

Product Designer

Role

Product Designer

Project

Academic

Project

Academic

Platform

Mobile

Platform

Mobile

Timeline

Aug 2024 -Dec 2024

Timeline

Aug 2024 -Dec 2024

Build Me Up App

Build Me Up App

A habit-driven wellness app for healthy weight gain

Build Me Up addresses a gap in the wellness market by focusing on healthy weight gain, a goal often overlooked by mainstream health apps. Through user-centered design and behavioral psychology principles, I created an engaging experience that motivates users to build consistent habits, track progress meaningfully, and feel supported throughout their journey. The app combines practical tracking tools with emotional intelligence to create a truly holistic wellness solution.

Role

Product Designer

Role

Product Designer

Project

Academic

Project

Academic

Platform

Mobile

Platform

Mobile

Timeline

Aug 2024 - Dec 2024

Timeline

Aug 2024 - Dec 2024

Build Me Up App

A habit-driven wellness app for healthy weight gain

Build Me Up addresses a gap in the wellness market by focusing on healthy weight gain, a goal often overlooked by mainstream health apps. Through user-centered design and behavioral psychology principles, I created an engaging experience that motivates users to build consistent habits, track progress meaningfully, and feel supported throughout their journey. The app combines practical tracking tools with emotional intelligence to create a truly holistic wellness solution.

Role

Product Designer

Project

Academic

Platform

Mobile

Timeline

Aug 2024 - Dec 2024

Problem

Problem

Market Gap: Over 80% of health apps focus exclusively on weight loss, leaving users who want to gain weight without adequate support or resources.

Market Gap: Over 80% of health apps focus exclusively on weight loss, leaving users who want to gain weight without adequate support or resources.

User Pain: Approximately 1.6% of U.S. adults are underweight, with limited tools designed to help them gain weight in a healthy, sustainable way.

User Pain: Approximately 1.6% of U.S. adults are underweight, with limited tools designed to help them gain weight in a healthy, sustainable way.

Mental Health Impact: Underweight individuals often struggle with body image issues and anxiety, requiring an empathetic, motivating approach to behavior change.

Mental Health Impact: Underweight individuals often struggle with body image issues and anxiety, requiring an empathetic, motivating approach to behavior change.

Consistency Challenge: Building new habits around eating and exercise is difficult without proper motivation, tracking, and accountability systems.

Consistency Challenge: Building new habits around eating and exercise is difficult without proper motivation, tracking, and accountability systems.

Solution

Solution

Build Me Up combines practical tracking with emotional design to create a supportive, habit-forming experience.

Build Me Up combines practical tracking with emotional design to create a supportive, habit-forming experience.

Daily Calorie Challenges

Daily Calorie Challenges

Helping users build consistency through achievable daily goals

Users receive a clear daily calorie intake challenge tailored to their weight-gain goal. Instead of overwhelming users with long-term targets, the app focuses on small, achievable actions that encourage consistency and reduce drop-off.

Streaks & Progress Tracking

Streaks & Progress Tracking

Reinforcing habits through visual progress

Streaks visually represent a user’s consistency over time, helping them stay motivated even when physical results take longer to appear. Progress is framed around effort and habit, not just outcomes.

Freeze Reward

Freeze Reward

Allowing flexibility without breaking momentum

After maintaining a streak for a set number of days, users unlock a Freeze Day. This allows them to pause for a day without losing their streak, reducing guilt and preventing users from abandoning the app after a missed day.

Personalized Recipes

Personalized Recipes

Reducing decision fatigue with tailored meal guidance

The app provides healthy, weight-gain focused recipes that users can save for later. This reduces the mental effort of meal planning while supporting healthier eating habits aligned with their goals.

Daily Calorie Challenges

Daily Calorie Challenges

Helping users build consistency through achievable daily goals

Helping users build consistency through achievable daily goals

Users receive a clear daily calorie intake challenge tailored to their weight-gain goal. Instead of overwhelming users with long-term targets, the app focuses on small, achievable actions that encourage consistency and reduce drop-off.

Users receive a clear daily calorie intake challenge tailored to their weight-gain goal. Instead of overwhelming users with long-term targets, the app focuses on small, achievable actions that encourage consistency and reduce drop-off.

Streaks & Progress Tracking

Streaks & Progress Tracking

Reinforcing habits through visual progress

Streaks visually represent a user’s consistency over time, helping them stay motivated even when physical results take longer to appear. Progress is framed around effort and habit, not just outcomes.

Freeze Reward

Freeze Reward

Allowing flexibility without breaking momentum

After maintaining a streak for a set number of days, users unlock a Freeze Day. This allows them to pause for a day without losing their streak, reducing guilt and preventing users from abandoning the app after a missed day.

Personalized Recipes

Personalized Recipes

Reducing decision fatigue with tailored meal guidance

The app provides healthy, weight-gain focused recipes that users can save for later. This reduces the mental effort of meal planning while supporting healthier eating habits aligned with their goals.

Streaks & Progress Tracking

Reinforcing habits through visual progress

Streaks visually represent a user’s consistency over time, helping them stay motivated even when physical results take longer to appear. Progress is framed around effort and habit, not just outcomes.

Freeze Reward

Allowing flexibility without breaking momentum

After maintaining a streak for a set number of days, users unlock a Freeze Day. This allows them to pause for a day without losing their streak, reducing guilt and preventing users from abandoning the app after a missed day.

Personalized Recipes

Reducing decision fatigue with tailored meal guidance

The app provides healthy, weight-gain focused recipes that users can save for later. This reduces the mental effort of meal planning while supporting healthier eating habits aligned with their goals.

30%

Increase in user motivation

Based on usability testing feedback

30%

Increase in user motivation

Based on usability testing feedback

85%

Task completion rate

Users successfully completed key workflows

85%

Task completion rate

Users successfully completed key workflows

4.7/5

Average user satisfaction

Across all tested features

4.7/5

Average user satisfaction

Across all tested features

Impact & Result

Build Me Up combines practical tracking with emotional design to create a supportive, habit-forming experience.

Impact & Result

Impact & Result

Build Me Up combines practical tracking with emotional design to create a supportive, habit-forming experience.

Build Me Up combines practical tracking with emotional design to create a supportive, habit-forming experience.

30%

Increase in user motivation

Based on usability testing feedback

30%

Increase in user motivation

Based on usability testing feedback

85%

Task completion rate

Users successfully completed key workflows

85%

Task completion rate

Users successfully completed key workflows

4.7/5

Average user satisfaction

Across all tested features

4.7/5

Average user satisfaction

Across all tested features

Design Process

Design Process

I followed the Five Planes of UX Design framework from The Elements of User Experience by Jesse James Garrett, layered with principles from habit-forming design (inspired by the Hooked Model). The process moved from abstract strategy to detailed surface design:

I followed the Five Planes of UX Design framework from The Elements of User Experience by Jesse James Garrett, layered with principles from habit-forming design (inspired by the Hooked Model). The process moved from abstract strategy to detailed surface design:

Strategy

Ideation

Storyboarding

Scope

Kano Card

MoSCoW

Structure

User Flow

Skeleton

Mood Board

Style Guide

Low Fidelity

Surface

Hi-Fidelity Designs

Usability Testing

Strategy

Ideation

Storyboarding

Scope

Kano Card

MoSCoW

Structure

User Flow

Skeleton

Mood Board

Style Guide

Low Fidelity

Surface

Hi-Fidelity Designs

Usability Testing

Ideation

To explore creative approaches beyond traditional tracking features, I used the Accelerators in Health Care ideation framework from Penn Medicine. This card-based method helped expand the solution space and think through behavior-driven interventions.

What I explored

  • Motivational triggers

  • Habit reinforcement

  • Emotional support beyond metrics

Key Insight

Users are more likely to stay consistent when progress feels achievable, flexible, and emotionally reassuring.

Storyboard

To translate insights into a clear user journey, I mapped the experience using the
Trigger → Action → Reward → Investment framework.

  • Trigger: Notifications prompt users to open the app

  • Action: Users complete a daily calorie challenge

  • Reward: Visual progress and streak reinforcement

  • Investment: Saved recipes and rewards encourage return usage

Why this mattered

Framing progress around effort—not perfection—helped reduce drop-off and encouraged habit formation.

Feature Prioritization with the Kano Card

To ensure Build Me Up delivered meaningful value without overloading users, I used the Kano Model to evaluate features based on their impact on user satisfaction.

How I categorized features

  • Basic needs: Daily calorie challenges, goal setting, features users expect by default

  • Performance features: Streak tracking, personalized recipes, directly improved satisfaction

  • Delighters: Rewards and Freeze Days, created moments of motivation and surprise

Key Decision

I prioritized performance and delight features that reinforce motivation and habit formation, rather than adding more tracking complexity.

Organizing Development with MoSCoW Prioritization

After defining feature value, I used the MoSCoW method to translate insights into a clear and achievable MVP roadmap.

MVP focus

  • Must-haves: Onboarding, daily challenges, notifications

  • Should-haves: Recipes, Freeze Days

  • Could-haves: Social sharing, barcode scanning

  • Won’t-haves (for now): Advanced integrations deferred for future phases

Key Outcome

This prioritization helped keep the MVP focused on habit-building features while managing scope and development effort.

User Flow

To ensure users could move through Build Me Up with clarity and minimal friction, I designed a detailed user flow that mapped the full journey from onboarding to daily engagement.

How the flow was structured

  • Onboarding to capture goals and personalize calorie targets

  • A clear daily entry point focused on completing the calorie challenge

  • Simple paths to maintain streaks and access recipes without distraction

Key Decision

I centered the flow around a single daily action, so users always know what to do next without feeling overwhelmed.

Ideation

To explore creative approaches beyond traditional tracking features, I used the Accelerators in Health Care ideation framework from Penn Medicine. This card-based method helped expand the solution space and think through behavior-driven interventions.

What I explored

  • Motivational triggers

  • Habit reinforcement

  • Emotional support beyond metrics

Key Insight

Users are more likely to stay consistent when progress feels achievable, flexible, and emotionally reassuring.

Storyboard

To translate insights into a clear user journey, I mapped the experience using the
Trigger → Action → Reward → Investment framework.

  • Trigger: Notifications prompt users to open the app

  • Action: Users complete a daily calorie challenge

  • Reward: Visual progress and streak reinforcement

  • Investment: Saved recipes and rewards encourage return usage

Why this mattered

Framing progress around effort—not perfection—helped reduce drop-off and encouraged habit formation.

Feature Prioritization with the Kano Card

To ensure Build Me Up delivered meaningful value without overloading users, I used the Kano Model to evaluate features based on their impact on user satisfaction.

How I categorized features

  • Basic needs: Daily calorie challenges, goal setting, features users expect by default

  • Performance features: Streak tracking, personalized recipes, directly improved satisfaction

  • Delighters: Rewards and Freeze Days, created moments of motivation and surprise

Key Decision

I prioritized performance and delight features that reinforce motivation and habit formation, rather than adding more tracking complexity.

Organizing Development with MoSCoW Prioritization

After defining feature value, I used the MoSCoW method to translate insights into a clear and achievable MVP roadmap.

MVP focus

  • Must-haves: Onboarding, daily challenges, notifications

  • Should-haves: Recipes, Freeze Days

  • Could-haves: Social sharing, barcode scanning

  • Won’t-haves (for now): Advanced integrations deferred for future phases

Key Outcome

This prioritization helped keep the MVP focused on habit-building features while managing scope and development effort.

User Flow

To ensure users could move through Build Me Up with clarity and minimal friction, I designed a detailed user flow that mapped the full journey from onboarding to daily engagement.

How the flow was structured

  • Onboarding to capture goals and personalize calorie targets

  • A clear daily entry point focused on completing the calorie challenge

  • Simple paths to maintain streaks and access recipes without distraction

Key Decision

I centered the flow around a single daily action, so users always know what to do next without feeling overwhelmed.

Mood Board and Study Guide

To create a visual experience that feels supportive rather than judgmental, I developed a mood board and style guide aligned with the emotional goals of the product.

How the visual direction was defined

  • Focused on themes of health, consistency, and motivation

  • Used natural, earthy tones to evoke comfort and approachability

  • Selected clean, legible typography to support accessibility

Key Decision

I intentionally avoided aggressive fitness aesthetics and designed a calm, encouraging visual system that reinforces progress over perfection.

Low Fidelity

To validate the core structure and interactions early, I created low-fidelity wireframes focused on layout, flow, and usability—without visual distraction.

How I approached it

  • Sketched core screens for onboarding, daily challenges, streaks, and recipes

  • Focused on content hierarchy and primary actions

  • Tested flows quickly to identify friction points

Key Decision

I intentionally kept wireframes minimal to prioritize interaction clarity over visual polish.

To validate the core structure and interactions early, I created low-fidelity wireframes focused on layout, flow, and usability, without visual distraction.

How I approached it

  • Sketched core screens for onboarding, daily challenges, streaks, and recipes

  • Focused on content hierarchy and primary actions

  • Tested flows quickly to identify friction points

Key Decision

I intentionally kept wireframes minimal to prioritize interaction clarity over visual polish.

High Fidelity

High Fidelity

Once the structure and flows were validated, I translated the wireframes into high-fidelity designs aligned with the visual system and emotional goals of the product.

How the designs evolved

  • Applied the style guide to ensure consistency and accessibility

  • Refined visual hierarchy, spacing, and interaction states

  • Designed key screens for daily challenges, progress tracking, and rewards

Key Decision

I focused on creating a calm, encouraging interface that reinforces progress without adding pressure.

Once the structure and flows were validated, I translated the wireframes into high-fidelity designs aligned with the visual system and emotional goals of the product.

How the designs evolved

  • Applied the style guide to ensure consistency and accessibility

  • Refined visual hierarchy, spacing, and interaction states

  • Designed key screens for daily challenges, progress tracking, and rewards

Key Decision

I focused on creating a calm, encouraging interface that reinforces progress without adding pressure.

Once the structure and flows were validated, I translated the wireframes into high-fidelity designs aligned with the visual system and emotional goals of the product.

How the designs evolved

  • Applied the style guide to ensure consistency and accessibility

  • Refined visual hierarchy, spacing, and interaction states

  • Designed key screens for daily challenges, progress tracking, and rewards

Key Decision

I focused on creating a calm, encouraging interface that reinforces progress without adding pressure.