Case · 01 · Mobile App · Fintech

A credit simulator for small businesses.

I designed from scratch the screens and services that bring certainty to a credit decision — so anyone can understand it without being a finance expert.

Client
Fintech LATAM
Role
Lead UX/UI Designer
Year
2024 — 2025
Deliverables
App, design system, research

01 · Overview

An app that helps small businesses understand their credit before signing anything.

A Latin American fintech wanted to open access to fair financing for small and medium businesses — but the flows they had were full of jargon, hidden costs, and forms that felt like obstacles.

I joined the rebuild of an internal-client app meant to give users clarity, structure, and a better understanding of the loan offer and origination process.

02 · Challenge

Can a simulator be as easy to read as a calculator?

People kept asking for a simulator because they had to run the numbers over and over to clear up doubts in the loan offer and origination process. That made the final decision feel complex and heavy.

The challenge was clear: reduce drop-off in the simulation flow, and earn trust by making every number on screen understandable.

03 · Process

From the 5 Whys to two low-fi screens in six weeks.

It all started with conversations — eight interviews with current and prospective small-business owners, using the 5 Whys technique to get past the surface complaint and understand the real motivations.

  1. Discovery & interviews

    8 small-business owners, 5 internal stakeholders, and 30+ insights mapped onto a single affinity board.

  2. Information architecture

    I rebuilt the flow into four clear phases: simulate, compare, request, and confirm. Each one with a single primary action.

  3. Wireframes & prototype

    2 low-fi screens and many rounds of usability testing with real users, in person and remote.

  4. Visual design & design system

    Component library connected to design tokens — paving the way for the developer hand-off.

  5. Hand-off & QA

    Live Figma reviews with engineering and three rounds of pixel-perfect QA before going to production.

04 · Solution

Every screen answers a question the user is actually asking.

Instead of forms, conversations. Instead of dense tables, summaries that are easy to scan. Each step has one job — and tells you exactly what comes next.

Decision · 01

One screen, one interaction

Each number answers the user's need to know which banking factors to adjust — to set a more realistic amount with a lower long-term debt ratio.

Decision · 02

Information at a glance

By keeping the loan data pinned at the top, the decision to use the component to simulate better conditions feels reassuring and clear.

Decision · 03

Words that sound like the user

Interactions, keywords, and scannable features were written in language close to the user — which builds more trust in the process and the next steps.

05 · Outcome

Better time, better results.

-72%

Drop-off in simulation

Compared to the previous version, after 80 days in production.

+2.5x

Completed applications

More users accept the credit thanks to the amortization-rate view and adjustments to their loan, cutting the time to 1 day (previously over 7 days).

4.1/5

NPS rating

A stage that improves the experience of the process, as well as the loan analysis time.

What I'd do differently next time

Curious about my work?

Let's chat. I'm always open to understanding a project better, no matter how challenging or complex it seems.

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