About us


Philipp Lehmann

Designer & Co-Founder

Philipp is dedicated to comprehend the processes forming our surroundings and ourself. He believes in the power of information visualization and that understanding leads to more engagement.
Creative direction
UX / UI design
App design
Visual storytelling

Didier Bertschinger

Designer & Co-Founder

Didier is committed to find the best possible design solution to satisfy all stakeholder needs. He adapts work processes and embraces challenges to make client visions an enjoyable and graspable reality.
App design
UX / UI design
User centered design
Embedded software


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Visualize your target

Vision mockups

Sometimes you just want to spark an idea. Based on a personal discussion we create screendesigns of your product, which help you present your vision to your stakeholders.

User journeys

With user journeys we line out all possible steps a user takes to achieve a certain goal with an interactive system. We map decision points that take the user from one step to the next and illustrate how to achieve an enjoyable user experience.

Expert review

As usability experts, we analyze your application and figure out its usability potential. Together with you, we will prioritize every specified issue and help develop a usability roadmap.
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Sample aquisition

Contextual inquiry

We follow the users of your application during their daily activities and analyze all their workflows. Taking their perspective helps identifying pain points and to understand their mindset. Contextual inquiry is a User-Centered Design research method.


Developing a shared understanding of a product is key for wise decision making. We excel at creating fast and sophisticated prototypes, allowing you to test a product before jumping into cost heavy development.

User testing

In usability tests we observe your users and how they solve specified tasks. This helps us identify usability and user experience issues within your product. We discover problems early and can react accordingly.
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The path to your goals

Design sprints

Design sprints are a structured step-by-step system for solving big problems within a diverse team. In one or two weeks we create a user journey and prototypes to evaluate the key ideas of a project.

Development support

We work with your developers and not against them. We understand them and are aware of the impact design decisions can have on the development. We document your project accurately, allowing a proper hand-off. During development we offer ideas for the realization of features and support for a high quality of the design implementation.

Identity design

We help you channel the character of your product or brand. We sharpen the transported messages and highlight the identity of your project.


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Supercomputing Systems

SCS develops innovative electronics and software solutions. Their industrial customers are leaders in the automotive and machine industries, high-performance computers and many other exciting industries. Redefine is honored to be a long-term partner and to continue this collaboration on many interesting projects.
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Innohack is a business design agency based in Zurich. They develop digital business models and create MVPs in record time. They run business experiments to test innovative ideas early on in a realistic setting and bring along a future-oriented set of ideas. This is why we are happy to support them in designing MVPs and we are proud to be part of their expert network.