Study 01 - Product Strategy

From “I KNOW” to “I DO”.

I pivoted from supplements to repeatable meal actions.

Study 01 - Product Strategy

From “I KNOW” to “I DO”.

I pivoted from supplements to repeatable meal actions.

Role

Research-led Product/UX Designer

Scope

Research · IA · UI · Prototyping

Scope

Research · IA · UI · Prototyping

Team

Solo (personal project)

Team

Solo (personal project)

Platforms

iOS / Android

Timeline

12.2024–04.2025

Status

Prototype

Pivot

I pivoted from a supplement helper to a learning-by-doing habit companion.

The strategy shifted toward repeatable meal actions, not “perfect choices.”

Framing

Supplements felt like a practical entry — until interviews flipped the assumption.

Key finding:

When people talked about “getting healthier,” they meant Food + Movement — not supplement shopping.

What changed

From purchase optimization to repeatable momentum.

For who

Built for people who want to get healthier, but need a doable next step when tired.

Scope:

Consumer app loop. (Platform in appendix.)

Scope:

Consumer app loop. (Platform in appendix.)

Strategy shift map

Compare with baseline

Back to I2 "Why" ritual

Strategy shift map

Compare with baseline

Back to I2 "Why" ritual

Signals

Occasional support
4/5
Trust fatigue
5/5
Low-energy next step
3/5
Enjoyment blocked by tracking (unprompted)
2/5

See interview snapshot

Back to I2 "Why" ritual

Signals

Occasional support
4/5
Trust fatigue
5/5
Low-energy next step
3/5
Enjoyment blocked by tracking (unprompted)
2/5

See interview snapshot

Back to I2 "Why" ritual

Evidence & Insight

Supplements weren’t the foundation for health — food and movement were.

Signals (from interviews; n=5) :

Occasional support, not a daily driver (4/5)

Supplements were used “when needed,” not daily.

Trust fatigue (5/5)

Conflicting advice → second-guessing what to follow.

Low-energy next step (3/5)

Wanted something doable when tired.

Enjoyment emerged as a constraint (2/5, unprompted)

2/5 avoided tracking because it reduced meal enjoyment.

Signals (from interviews; n=5) :

Occasional support, not a daily driver (4/5)

Supplements were used “when needed,” not daily.

Trust fatigue (5/5)

Conflicting advice → second-guessing what to follow.

Low-energy next step (3/5)

Wanted something doable when tired.

Enjoyment emerged as a constraint (2/5, unprompted)

2/5 avoided tracking because it reduced meal enjoyment.

Guiding principle:

Trust. Clarity. Consistency.

Guiding principle:

Trust. Clarity. Consistency.

Design implication:

To fit real routines, start with daily eating, then makes the next step small enough to repeat. (Meal Planner → Mission preview)

Strategy / Positioning Decision

What if healthy-eating felt enjoyable — and earned?

Enjoyment is a core goal for healthy eating. Keep progress lightweight, so meals stay enjoyable.

Earned = small wins worth repeating.

Evidence:

Tracking made meals less enjoyable for 2/5 (unprompted).

Credibility:

Dietitian-reviewed recipes as a quality gate.

Credibility:

Dietitian-reviewed recipes as a quality gate.

Boundary:

Not a medical app.

Positioning:

A habit companion for repeatable wins.

Positioning:

A habit companion for repeatable wins.

Small note

Meals are designed to make the same portions feel satisfying through technique and creativity — at home or eating out.

Positioning map

See How “small wins” are designed

Back to I2 "Why" ritual

Positioning map

See How “small wins” are designed

Back to I2 "Why" ritual

Meal Planner → Mission preview

See Food Diary UI

I2 feature-Daily "Why" Ritual

Back to I2 "Why" ritual

Meal Planner → Mission preview

See Food Diary UI

I2 feature-Daily "Why" Ritual

Back to I2 "Why" ritual

Habit Loop & MVP

The smallest entry loop that makes action feel doable.

Plan → Try →Earn a win → Repeat

What I saw (baseline; n=5):

MVP (built): Meal Planner → Mission preview (entry loop)

so users know what to do next in minutes.

Planned: Food Diary

turns effort into pride through a feel-good record.

What I saw (baseline; n=5):

MVP (built): Meal Planner → Mission preview (entry loop)

so users know what to do next in minutes.

Planned: Food Diary

turns effort into pride through a feel-good record.

Small note

This is a habit companion. Cooking is one controllable start, not the product.

Validation highlights

Case 2 → Make it doable (core flow friction)

Case 3 → Make it meaningful (motivation triggers)

Takeaway

I pivoted to a learning-by-doing habit companion—designed for enjoyable, repeatable eating.

What this project taught me:

• Supplements were occasional support. Daily food + movement drove real change. • Repeatable actions — not perfect plans — became the core strategy.

Positioning guardrail:

A healthy-eating habit companion, not a cooking app or a medical diagnosis tool.

Next (early roadmap):

Validate the MVP core path: Meal Planner → Mission preview, so users can decide the next step in minutes. (Validation lives in Case 2 + Case 3.)

Update (after Case 3): How the concept evolved

Later, Case 3 suggested sustain needs post-action feedback, so Food Diary should become a milestone signal inside a progression system — not a standalone record.

Case Study 1 - Evidence pack

Optional deep dive below.

Insight

What broke the original framing?

Evidence & Insight

What did interviews contradict — and why did I pivot?

Research snapshot

What were the methods and limits?

Methods&Limitations

Methods & limitations

Expert input

What would break in real life (n=2 dietitians)

Expert check

What would break in real life (n=2 dietitians)

Positioning

Why a habit companian?

Positioning

Why a habit companian?

Ecosystem

Who benefits as the system grows?

Ecosystem

Who benefits — and how could trust hold as it grows?

Feasibility & Quality

What boundaries protect trust?

Feasibility & Quality

What are the safety & quality boundaries?

MVP (simulated)

How I would validate the loop — fast.

MVP (Simulated)

How I would validate the loop — fast.

Deep Dive

Study 00 Overview

A quick tour of FoDi and why it exists.


Study 00 Overview

A quick tour of FoDi and why it exists.


Study 02 Next-Step Guidance

How to make the start feel like “my start”?


#Core flow #IA

Study 02 Next-Step Guidance

How to make the start feel like “my start”?


#Core flow #IA

Study 03 Motivation Design

Why vision wasn’t enough — and what feedback needs to do.


#Motivation design #Behavior design

Study 03 Motivation Design

Why vision wasn’t enough — and what feedback needs to do.


#Motivation design #Behavior design

©2025 Ya-Ning Chang. All Rights Reserved.

©2025 Ya-Ning Chang. All Rights Reserved.