London-based App Design Studio

We turn complex business logic into products people use.

Most clients come to us with a design problem. We usually find a product problem underneath it. Marketplaces, operations platforms, transaction-heavy apps — the harder the problem, the better.

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Selected Work

Complex problems,
clear products.

We design apps where trust, money, and complexity meet. Here's what that looks like in practice.

C2C Marketplace

Second-hand film & camera gear platform

A B2B2C model that evolved mid-build into a C2C structure — shifting responsibility, risk, and trust mechanics entirely. We designed the dispute handling, payment flows, and role-based permissions as the model moved underneath us.

Trust & Safety Payment flows Role-based UX MVP → Launch
Operations Platform

Sports event management MVP

A multi-role platform spanning registration, scheduling, ticketing, donations, and invoicing. The challenge wasn't the individual features — it was designing across a complex operational ecosystem where every role had different needs and permissions.

Multi-role systems Ticketing & finance Scheduling MVP

"Working with Chun was a pleasure. He played a key role in shaping several of our most important internal tools and the client-facing app."

Arik Peretz Co-founder, Y TREE

"Chun was a fantastic UX partner – quickly grasping complex data challenges and translating them into clear, interactive design concepts."

Ciaran McCale CMO, ESG Book

"Our product had a lot of moving parts — different user types, evolving requirements, and high expectations. Chun brought calm, clarity, and fast execution."

Paul Smith CEO, Global Gains

"An exceptional UX/UI designer who delivered intuitive web and mobile experiences under tight deadlines."

Isobel Raeside Head of Product

"UX CIRCLES' design and communication are incredibly efficient. They developed an initial website for us within a week, which instantly attracted potential customers."

Rebecca Chung General Manager, Han Dian UK

"His visual direction aligned seamlessly with our premium brand positioning and professionalism made a real impact."

Alel Fahd Founder, PowderSpark

"Working with Chun was a pleasure. He played a key role in shaping several of our most important internal tools and the client-facing app."

Arik Peretz Co-founder, Y TREE

"Chun was a fantastic UX partner – quickly grasping complex data challenges and translating them into clear, interactive design concepts."

Ciaran McCale CMO, ESG Book

"Our product had a lot of moving parts — different user types, evolving requirements, and high expectations. Chun brought calm, clarity, and fast execution."

Paul Smith CEO, Global Gains

"An exceptional UX/UI designer who delivered intuitive web and mobile experiences under tight deadlines."

Isobel Raeside Head of Product

"UX CIRCLES' design and communication are incredibly efficient. They developed an initial website for us within a week, which instantly attracted potential customers."

Rebecca Chung General Manager, Han Dian UK

"His visual direction aligned seamlessly with our premium brand positioning and professionalism made a real impact."

Alel Fahd Founder, PowderSpark

Services

Two ways to work
with us.

We keep it focused. No bloated retainers, no junior handoffs.

02

Design Audit & Roadmap

You have a product. Something isn't working. We spend two weeks inside it, identify the real problems (not just the visible ones), and give you a prioritised roadmap.

£2,000 – £3,000

2 weeks

03

Brand & Visual Design

Led by Rita Hou, our graphic designer specialising in food, drink, and consumer packaging — plus marketing websites and landing pages for consumer brands. Distinct from app design — deliberately.

Enquire for pricing

Scope-dependent

About

We've seen what happens
when complexity is ignored.

We've designed invoice systems tracking £3.5B in assets. We've mapped dispute flows before anyone agreed who owned them. We've watched a platform shift from B2B2C to C2C mid-build — and caught what that meant before it became a product crisis.

Complex products aren't just hard to design. They're hard to think through. That's where we come in.

UX CIRCLES is a small studio based in London. We work with founders and product teams who are building things that don't fit neatly into a template.

13+
Years experience
£9B+
Assets on platforms designed
100M+
Users on products shipped
Chun-Chuan Lin

Chun-Chuan Lin

Founder · Product Design Lead

13 years in product design. Previously founding designer at a fintech platform scaling from Series A to C, overseeing £9B+ in assets. Before that: Synology (100M+ users), Acer. Based in London for 8 years. Works on the hard stuff — multi-role systems, transaction flows, trust mechanics.

Rita Hou

Rita Hou

Graphic, Packaging & Web Design

Graphic designer specialising in food and drink brand identity, packaging, and marketing websites for consumer brands.

Contact

Got a complex product
to build?

A 25-minute call to hear what you're building. No pitch, no deck. We'll tell you honestly whether it's the kind of problem we work on.

Book a call
or send a message
Message sent. We'll be in touch within one working day.

Prefer email? hello@ux-circles.com