UX Design Agency — Improve User Experience & Boost Your Conversions

Coteries, an agency specialized in UX design, creates interfaces optimized for user experience and conversion. We help you design digital products that are intuitive, efficient and in line with the expectations of your users.

Are you looking for a UX agency to improve the ergonomics and efficiency of your site or application? We turn your ideas into engaging and seamless experiences.

Let's discuss your project now!

Your problem: an interface that hampers engagement and conversion?

You are not alone. Many Swiss companies are experiencing these difficulties:

❌ Confusing navigation that disrupts the user experience

❌ A non-intuitive design that scares away your visitors

❌ Low conversion rates due to a lack of UX optimization

❌ A site or application that is not very accessible on mobile

❌ An outdated interface that doesn't reflect your brand image

Our solution: a UX design designed for performance and fluidity

We guarantee you a fast, intuitive and optimized platform, designed to attract more visitors and convert your prospects effectively, with:

✅ An optimized user experience, based on the analysis of user behavior
✅ A clean and intuitive design that makes it easy to navigate and convert
✅ A mobile-first approach, guaranteeing fluidity on all screens
✅ Interfaces designed on Webflow, Shopify or React & Next.js to combine aesthetics and performance

Why choose Coteries as a UX Design agency?

✔️ UX/UI design expertise — We create interfaces designed for the user
✔️ A process focused on the customer experience, based on data and user tests
✔️ Modern solutions: Webflow, Shopify, React & Next.js
✔️ Full support, from UX audit to production start-up
✔️ A business-oriented approach, with a focus on conversion and engagement

We help businesses optimize their digital interfaces for a better user experience and more performance.

From startups to large businesses

They trust us

Coteries has been supporting us for more than 10 years to develop our digital solutions to our great satisfaction. I recommend!

Julian Bruno

Digital Experience Manager

EPFL Innovation Park

Coteries has shown remarkable proactivity, both in proposing technical solutions and in designing the design of our site.

Valérie Fuchs

Digital Marketing Manager

Posalux

Coteries helped us redesign our website and it was a success. Sacha, our project manager, was available and attentive to our needs!

Aryane Boroumand

Marketing Associate

AELER

We were very satisfied with the work of Coteries on our new site. They are available, responsive, on-time and professional

Nicolas Seidler

Executive Director

GSPI

Coteries did a fantastic job creating an innovative, powerful and super intuitive user journey. Bravo!

Patrick Odoni

CEO

FixMySpace

Our latest projects in UX/UI Design

Gaming Network

Design and development of a gaming app

Imaging Plaza

Creation of a web app to list imaging software

SwissInspect

Development of a web app in the field of civil engineering

Cedille.ai

Development of a software to generate texts using AI

See more of our work

Our UX/UI Design Creation Process

Turnkey interfaces, ready to be developed quickly!

UX Analysis & Design

We audit your interface, analyze user behaviors, and identify friction points to create a smooth and efficient journey.

Prototyping & User Tests

We design interactive models and test courses to ensure an intuitive and optimized experience.

Implementation & Optimization

We develop or integrate your interface with modern tools, with post-launch follow-up to ensure its performance.

Quality above all

Our labels and awards prove our commitment to always bringing you the best

A dedicated and accessible team of web specialists

Adrien

CTO & Lead Developer

Kelly

Web Project Manager

Mégane

Software Engineer

Pep

Designer

Sacha

Web Project Manager

Sébastien

Head of Design

FAQS

How goes the collaboration?

For all projects, we offer our customers dedicated and personalized follow-up. We act as substantive partners rather than just consultants.

A constant follow-up is carried out in person or by videoconference according to your preferences.

How much do your services cost?

It all depends on your project! We'll estimate your project and make you an all-inclusive offer for its realization. A website, for example, can cost between CHF 5,000 and CHF 100,000 (or even more), depending on the degree of complexity and functionality required. Contact us for a tailor-made estimate!

How do you bill for your working time?

Our offers usually include a flat fee, without any bad surprises. In the meantime we ensure a detailed follow-up of each project. This includes tracking time on each task. You can even ask us for detailed reports if you want.

Will I learn by working with you?

Yes! We share our knowledge with you throughout the collaboration. This allows you to understand the methodologies and the ins and outs even if it is not part of your area of expertise.

Do you have examples of successful projects that you have completed in the past?

Of course! You can take a look at our projects .