This paper presents user evaluation of a high-fidelity prototype of a mobile application for patient self-management within the field of Multiple Sclerosis (MS). The application named msHelse consists of four modules: Diary module, Summary module, Stress management module, and a Todo-list. Four study subjects were interviewed in semi-structured interviews with questions regarding the functionalities and the user experience after using the application, as well as using System Usability Scale (SUS). User feedback resulted in functionality adjustments of the high-fidelity prototype, especially in data representation of the Summary module and the way the Diary module would assess user entered data. Thus, the msHelse application has been refined to tune into the needs of Norwegian users.