For application development, we use the Design Thinking methodology. A phased approach where we the user is our central focus. With the help of different models we test the expectations and functionality of the application on the user and thereby create an optimal User Experience. When the prototypes are approved, we develop the application on site or in our studio. During this process, the end user, key user and product owner are intensively involved and informed. Herein lies the success of this approach.