UI/UX and digital product design for businesses

At 150 Por Ciento we design digital products that convert: user research, prototyping, design systems and interfaces measured against business goals. Design isn’t judged by how pretty it is, but by what it gets users to do.

We design and we also build — the design reaches production without getting lost in the handoff.

Technologies we use

Figma
FigJam
Moderated and unmoderated user testing
design tokens
Developer handoff
WCAG accessibility audits

20% increase in conversions after Airtm.com redesign
60% fewer support tickets

Starting from USD 3,000

Typical timeline 3–8 weeks depending on project scope

What we solve with product design

Products with traffic that doesn’t convert
Interfaces users don’t understand — and a support inbox full of questions to prove it
Teams redesigning every screen from scratch for lack of a system
Ideas that need testing with users before investing in development
Strong brands with digital products that don’t live up to them

Every confusing screen is paid for in support, in churn, or both.

What we mean by product design

Evidence-based decisions: research and usage data, not personal taste
Prototypes before code: test cheaply in Figma what would be expensive to fix in development
Design systems: reusable components that speed up every new screen
Accessibility and performance as requirements, not extras

Design that can’t be built isn’t design: it’s illustration.

What kind of solutions we deliver

User research and testing (moderated and unmoderated)
Information architecture and navigable prototyping
UI design for web and mobile applications
Design systems and component libraries with tokens
UX audits and conversion rate optimization (CRO)
Continuous design embedded in development teams

How we do it

1. Research

Interviews, analytics and sector benchmarks
Definition of users, critical tasks and success metrics

2. Architecture and prototype

Flows and information architecture
Navigable prototype validated with real users

3. UI and system

Visual design aligned with the brand
Design system with components, states and tokens
Documented handoff to development

4. Validation and iteration

Usability testing on what’s built
Conversion measurement and continuous improvement

Frequently Asked Questions

How much does a design system for a SaaS cost?

From 8,000 USD for a base system (essential components, tokens and documentation). The price grows with the number of components, platforms and brands it must cover.

Do you only design, or do you build it too?

Both. We’re a full-stack agency: the same team that designs can build, so the design reaches production faithful to the prototype and without coordinating multiple vendors.

How do you measure whether the design works?

With metrics agreed before designing: conversion, task success rate, completion time and support ticket volume. We report against that baseline.

Can you audit my current product without redesigning everything?

Yes. The UX audit delivers prioritized findings and quick wins you can apply immediately, with a roadmap if you later want the full redesign.

Do you work embedded with internal teams?

Yes, in two modes: as a cell embedded in your product team, or through closed deliverables. In both, using your team’s rituals and tools.