In 2016, Microsoft released the first portable mixed reality device, the HoloLens. This opened completely new possibilities for software visualisation. The aim of this thesis is the development of a porting of the software analysis tool Getaviz for mixed reality. Mixed reality introduces new challenges regarding the user interface. In order to find solutions to these challenges, this thesis concentrates on designing such a user interface. Therefore, the logic of Getaviz was not reimplemented. The results are designed to be used in a future project, allowing Getaviz itself to be used in mixed reality. Consequently, the open source code is available on GitHub. In order to assure high usability, the development process was divided into three iterations followed by evaluations with five study participants each. The frequent feedback allowed to react to problems and brought in new ideas to improve the software. This process is partly based on the concept of agile software development. The development process of this thesis resulted in an app for the HoloLens. The app can be found in the Microsoft Store by searching for „Getaviz“.