let’s dev GmbH & Co. KG - The brand for groundbreaking custom software let’s dev GmbH & Co. KG - The brand for groundbreaking custom software

The brand for groundbreaking
custom software

Pioneering. Experienced. Ever exploring.


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Human-Computer Interaction

let’s dev - The brand for groundbreaking custom software

The term human-computer interaction describes an interdisciplinary field of research and application that explores the design and use of computer technology, especially at the human-computer interface. The interaction of humans with the corresponding technology is in the foreground. Research is done on the way of interaction as well as on its design and evaluation. One focus of human-computer interaction is on the user interface, which enables input for the operation of a system and allows feedback on the state and behavior of the system.

Human-computer interaction is a multidisciplinary field that draws insights from various disciplines. These fields include computer science, psychology, sociology, and design.

Usability and user experience play a crucial role in the design and evaluation of applications and interfaces within human-computer interaction. The demands on usability and user experience have grown over time, as computers have long since ceased to be tools used only by specialists and have come to occupy a large place in the daily lives of various user groups.

Human-Computer Interaction

User Experience

User experience extends the concept of usability. Here, the user perspective is emphasized and emotional and aesthetic factors are more strongly included. User experience describes the perception and reaction of a person resulting from the actual and/or expected use of a product, system or service. User experience is not only about the mere achievement of a goal, but rather about the experiences that users have before, during and after using the product.

User experience manages to arouse emotions in users. For this reason, the user experience is a decisive factor in whether users associate positive feelings such as fun and joy with the product and whether they would like to use the product again in the future. The success of a digital product is therefore strongly linked to the implementation of a holistic user experience.

We make it simple

Software makes life easier. It makes it easier to organize, communicate, work, sell, entertain. That's exactly what we do at let's dev: We transform complex topics and processes into direct, structured interaction. Because we combine a lot of experience with even more curiosity, we achieve trend-setting and high-quality results. This makes let's dev the brand for groundbreaking custom software.

Contact us!

2 Locations
Karlsruhe & Hamburg


let’s dev GmbH & Co. KG

Alter Schlachthof 33

76131 Karlsruhe

+49 721 26 67 65 0


let’s dev GmbH & Co. KG

Eimsbütteler Chaussee 21

20259 Hamburg

+49 40 60 77 922 0