Conception and implementation of a mobile client for TrackYourHealth based on the cross platform framework Flutter

In the last years, health care became a leading topic with the challenge of scalability and accessibility in an aging demographic in the developed world. A proposed solution to this issue is the usage of Electronic Health and Mobile Health to aid professionals in the research and treatment of health-related issues. The effectiveness of these approaches is widely accepted and recognized. However, the implementation and development of such apps are currently complex and redundant. This thesis is trying to solve this issue by using a cross-platform development approach against an existing modular backend targeted at creating questionnaires to aid research in health-related issues, called QuestionSys. To achieve this different approaches are evaluated and a prototype is developed in Flutter, a cross-platform software development kit. The goal is a working prototype against the existing backend. To achieve a better understanding of the current situation in this area of research a short introduction is included. A presentation and critical evaluation of the implementation are also included in this thesis. In the end, an overview of the results is given and possible future works based on this are presented.