UX Design and Development Agency
to launch and accelerate your digital products.

40/60 is an agency, a method and talents that transform your visions into concrete projects thanks to a unique combination of business, customer and technological approaches.

Discover our projects

Full-service agency, CII approved, based in Paris & Nantes.

Branding, UX & CX Design and Web and Mobile Development, tailor-made.

Our services

Aperçu d'un site web performant dans un écran d'ordinateur

Web & CX performance

Designing the ideal experience

Conception, design and development of tailor-made websites that boost acquisition, conversion and retention. 
Implementation of a solid CX, UX/UI strategy to maximize the conversion rate.

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    Deploy a marketplace or e-commerce

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    Gain visibility and increase conversions

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    Create tailor-made customer journeys

Interface d'application mobile et plateforme

Mobile application & Saas platform

First-class digital products.

We design tailor-made digital products, using the lean start-up approach and design thinking to analyze needs and find adapted solutions.

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    Define & frame my product

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    Launch a first release (MVP)

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    Boost & scale my product (PMF)

Aperçu d'une interface web dans un écran d'ordinateur

Showcase website

Your best tools to sell and present yourself. 


We create showcase sites that will be your best window and sales tools.

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    Launch a webflow or WordPress site

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    Redesign my website

Personne autour d'une table qui font du brainstorming

The Innovation Studio

Going from a roadmap to a concrete project.

Realize innovation strategies into projects with measurable impact.

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    Launch an innovation lab

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    Establishing a culture of innovation

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    Create a new service or redesign an existing device

We are rethinking the customer and business experience, and delivering efficient web and mobile products.

We do this by drawing on our expertise in design and technology. Our approach is to analyze and co-create solutions with our customers, in order to deploy them and launch new products on the market. We strongly involve our customers in this approach, because their expertise is crucial to progress together. We support projects from their idea phase, even if they are not very mature, to their successful conception.

A project in mind?
Let's work together!

Let's make an initial appointment to discuss your project and your ambitions.

Start a project

Without filters, we challenge ideas and implement tailor-made methods, whether it is a customer experience strategy, branding, services or technological solutions. Our great strength lies in our ability to meet users. We rely on their feedback to offer innovative and efficient services.

Notre grande force réside dans notre capacité à rencontrer les utilisateurs. Nous nous nourrissons de leurs retours pour proposer des services innovants et performants.

Nos collaborations réussies

Ils ont aimé la collaboration et notre accompagnement pour un résultat impactant !

  • 4,9/5
    de satisfaction projet
  • +25
    Talents design & tech
  • +180
    Projets lancés depuis 2016
5/5 étoiles de notation
4,95
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5/5 étoiles de notation
Business software

“Thanks to the 40/60 agency initiative, we have been able to design a revolutionary tool that will propel CND into a new era.”

Stéphane Graveleau
Technical Director - SREM Technologies
5/5 étoiles de notation

The redesign of our platform has perfectly integrated the needs of users and the community, establishing a harmonious link between these two worlds. The goal of revitalizing the user experience was successfully achieved through an engaging user interface. The professionalism, creativity and responsiveness demonstrated fully met our expectations, within the initial framework defined at the beginning of the mission.

Lucile Jaricot
Product Manager
5/5 étoiles de notation

“The 40/60 team was able to immediately absorb our product philosophy to improve user journeys and produce mockups that we are gradually integrating into our application. The iterations were very fast; each time involving the right mix of ideas, concrete proposals and taking into account our feedback. More than a studio, 40/60 is a real partner for all design/product/UX themes with an ultra-dynamic, responsive and proactive team.”

Damien Guery
Co-founder
5/5 étoiles de notation
Mobile app

“The collaboration with 40/60 is warm! A young, dynamic and flexible team. A remarkable quality of exchange and real value proposals throughout the collaboration. We had the opportunity to work with a lot of partners, but despite the complexity of the project, 40/60 took up the challenge and was able to transform: our vision into reality.”

Toya Vertil
CEO
5/5 étoiles de notation
Mobile app

“Our objective was to reinforce the value of our application and the agency was a great help in this mission. What I really appreciated during our collaboration was the agency's ability to understand our complex environment. They took the time to listen to our needs and to work closely with us to design meaningful changes that improved our product in a tangible way. Their commitment to our success was nothing short of incredible and we couldn't be more grateful for their contribution to our business.”

Nicolas Hiver
Product Manager at SNCF Transilien
5/5 étoiles de notation

“A team that listens and is professional. Extensive thinking to understand what exists and highlight areas for improvement in the user experience.”

Antoine Gouteix
CTO
5/5 étoiles de notation
Carplay & Androïd Auto

“Dynamism, seriousness, listening while being in a climate of conviviality conducive to excellent exchanges”

Olivier Sancier
Project Manager Media and Gaming
5/5 étoiles de notation
Business software

“The collaboration with the studio is excellent in every way! The agreement and exchanges with the studio teams are of very good quality, the work provided lived up to our expectations, and at an affordable price. Camille and her team know how, from sprint to sprint, adapt to our requests, produce numerous routes and alternatives to give us different perspectives. We are convinced that our collaboration, which started in 2019, is destined to last over time.”

Tomas Simoni
Product Manager
5/5 étoiles de notation
E-commerce / Marketplace

“What we preferred about our collaboration was 40/60's ability to adapt to our unusual business and to offer adapted solutions.”

Tanguy De Cottignies
President of Stokelp
5/5 étoiles de notation

“A team that listens and is professional. Extensive thinking to understand what exists and highlight areas for improvement in the user experience.”

Antoine Gouteix
Digital Web Development & Communication Manager
5/5 étoiles de notation
E-commerce / Marketplace

“40/60 did a great job redesigning our marketplace. The impact of the redesign was real, with a 35% increase in the conversion rate after the redesign.”

Iris de Corlieu
Label Emmaüs Transition Manager
5/5 étoiles de notation

“We have developed the first digital service for renting beer dispensers with delivery in 30 minutes and refrigerated. Pilot built and launched in less than three months thanks to the design thinking approach orchestrated by the Schoolab team and 40/60.”

Pierre Lorrant
‍ ‍ ‍ Product Owner at Heineken
5/5 étoiles de notation

“We worked with 40/60 to improve the user experience of our dashboard and better understand the needs of our users. They took the time to understand our business and the expectations of our users, to offer us tailor-made solutions adapted to our needs. Thanks to them, we have succeeded in creating a user experience that is more intuitive and closer to our users. We highly recommend 40/60 for their professionalism, their competence and their sense of humanity.”

Christophe Chevalier
CEO
5/5 étoiles de notation
Business software

“A big thank you for the quality of your work! We are very happy with the result and especially with our collaboration to launch our product on the market!”

Ludovic Stang
Co-Founder & CEO of Allaw
5/5 étoiles de notation
Business software

“I am eager to have worked with the 40/60 team to redesign the UX and UI of our application and website. The objective of our collaboration was ambitious, but their support, time, expertise and valuable advice allowed us to successfully complete our project.”

Marouane El Gueddah
General manager
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