User interface design refers to the design of the human-machine interface (HMI) through which users interact with a software system. The goal is to provide users with a modern, easy-to-use, and engaging user interface that meets their needs and expectations.

User Experience Design

User Experience Design (UXD) refers to the User Centered Design (UCD) process for designing interactions and experiences that users have with software. At its core, it is about creating a user-friendly, engaging, and effective design that meets users' needs, expectations, and goals. A positive user experience leads to high customer satisfaction. This brings a clear competitive advantage and at the same time decreasing costs, as support efforts are reduced.

We work with different UX designers who have different design orientations and focuses. This way we find the ideal designer for your software project.

Usability Engineering

In product development, usability engineering is used to ensure that the final product meets the requirements and needs of the user while ensuring product safety in use. By incorporating user research, prototyping, usability testing and continuous feedback, products are designed to be user-centric and ergonomic.

In our projects, we work with usability specialists who are selectively chosen. Especially in the MedTech area it is important to proceed according to IEC 62366 and to create the usability file.

Visual Design

In the visual design of a user interface, several aspects are important to achieve an attractive and user-friendly design.

We define aesthetics, color scheme and typography with you, but they have to be chosen considering the target platform. For example, flat design, material design, skeuomorphism, minimalism, typography-oriented design or retro design can be used. In addition, the design should be "responsive" so that the layout adapts flexibly to different screen resolutions. Tools such as Adobe Creative Suite are used for the design.

Icon Design

Icons are used in menus, toolbars, buttons, notifications and other GUI controls to provide the user with an intuitive, language-independent and quickly understandable way to interact. The design style usually follows the operating system specifications or an individual style guide. Common styles are: Flat Design, Material Design, Skeuomorphism, Wireline or Glyphs.

We use only vector graphics software to design the icons. If desired, the icons are also created and rendered in 3D. Afterwards, a dimensionally accurate conversion for the target platform is done so that the icons are displayed there "pixel-perfect". We also take into account requirements such as high DPI and alpha channels.


Your software has grown historically and many developers have worked on the source code without following guidelines with the result that the GUI now looks inhomogeneous? Sometimes there is a lack of UI developers with the "pixel eye" in the development team, e.g. spacing or button sizes are not implemented uniformly or colors are used differently. Interaction concepts are implemented differently or input value ranges are defined differently.

We take a pragmatic approach to harmonize the GUI, e.g. spacing, dimensions, colors and icons, so that everything looks like one unit. If desired, we can also work directly in the source code. However, the requirement is that a style guide is available.

Facelift / Redesign

A facelift / redesign enables the life cycle of your product to be extended and creates scope for a technological migration or a new development. This fresh-up is particularly suitable if a successor product is being developed that still needs some time to be ready for the market or if the end of a product's life is foreseeable but it is to be "refreshed" again for the market. The time and costs required for this are a fraction of a new development.

Time for a facelift or redesign of your software? Let's get it done!


Your software has a few rough edges? Inconsistent design of dialog boxes, windows, menus, icons and colors, as well as different workflows, confuse users. This is often due to the fact that there is no binding style guide.

We create a style guide that defines the visual layout and interaction elements according to Visual Design in the form of guidelines and standards. It serves as a reference manual for UX designers and developers. In this way, a uniform, consistent and standard-compliant appearance is ensured.


With prototypes, we reduce your development costs through early evaluation possibilities. As a decision maker you get a better feeling for the final product - without having to abstract technically. In addition, we support you in building a holistic understanding of your project, as well as in processing your ideas without tying up your own developer resources 

Validate user experience, visual design, usability and technical feasibility with HMI prototypes, from wireframe to high-fidelity. 


Our team is here to accompany you in reaching your goals and turning your visions into reality. With our customized solutions and expertise, we help you enhance your success. Contact us today to learn more. We look forward to hearing from you and assisting you further.

CONZE Sales Manager Marcel Sauer
Marcel Sauer
Sales Manager
CONZE CEO Dennis Conze
Dennis Conze