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CASE STUDY 01 — PRODUCT DESIGN

Making shared money feel simple.

Making shared money feel simple.

Making shared money feel simple.

A comprehensive template for showing how a lead designer frames ambiguity, drives decisions, and measures what changed.

A comprehensive template for showing how a lead designer frames ambiguity, drives decisions, and measures what changed.

Role · Lead Product Designer

Timeline · 12 weeks

Designer working through interface decisions at a desk

01 / FRAME THE PROBLEM

The real problem wasn’t a feature gap. It was uncertainty.

The real problem wasn’t a feature gap. It was uncertainty.

The real problem wasn’t a feature gap. It was uncertainty.

People managing shared expenses were doing mental arithmetic, screenshotting transactions, and avoiding conversations that felt awkward. The goal was to make the next best action obvious without making the product feel like a finance dashboard.

People managing shared expenses were doing mental arithmetic, screenshotting transactions, and avoiding conversations that felt awkward. The goal was to make the next best action obvious without making the product feel like a finance dashboard.

Clarity

A person can tell what to do next in seconds.

Confidence

Status, ownership, and progress are always explicit.

Resolution

A group can move from tension to agreement in one flow.

RESEARCH NOTE

“I don’t want to ask twice — I just want to know where we stand.”

02 / SHOW THE DECISIONS

Three choices that changed the experience.

Three choices that changed the experience.

Three choices that changed the experience.

01

Lead with the group, not the ledger.

The home view foregrounds the people who need alignment before exposing individual transactions.

02

Use language that de-escalates.

Every status label was tested for its emotional temperature, moving from blame toward shared progress.

03

Make progress visible at a glance.

A lightweight timeline transformed an ambiguous balance into a predictable path to done.

ADD PROTOTYPE VIDEO

A key interaction, before → after, or usability clip.

ADD FINAL UI

A polished screen, system detail, or before-and-after comparison.

03 / MAKE IMPACT CONCRETE

The result is a product people can act on — and a story stakeholders can believe.

The result is a product people can act on — and a story stakeholders can believe.

The result is a product people can act on — and a story stakeholders can believe.

28%

faster agreement on shared balances

4.7 / 5

confidence rating in concept testing

Reflection — The strongest work here was not the interface alone; it was creating a shared language for a sensitive, human problem. A complete case study should make that connection visible.

Reflection — The strongest work here was not the interface alone; it was creating a shared language for a sensitive, human problem. A complete case study should make that connection visible.

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Let’s work

together!

I am currently available to work for awesome projects and cool people.

Let me know what you have in mind!

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Marta Hollingsworth — Product Design

Case study template