Chali, Frederick HenriYonah, Zaipuna O.Kalegele, Khamis2023-10-122023-10-122017Chali, F. H., & Yonah, E. D. Z. O. (2017). Critical Issues and Challenges in Developing Mobile-Based Health Systems: Case of Tanzania. International Journal of Computer Science and Information Security.URL:https://tinyurl.com/5enbk9v2http://hdl.handle.net/20.500.12661/4128Abstract. Full text article. Also available at https://tinyurl.com/5enbk9v2Utilization of mobile devices worldwide is increasing every day. This has created an increasing demand for mobile apps, the development of which is not seamlessly without challenges. We conducted a research survey to identify and confirm the known challenges and issues that are faced by mobile app developers in their development work in developing countries particularly Tanzania. This survey was done in three regions of Tanzania: Dar es Salaam, Dodoma and Arusha; because most of the mobile apps developers are located in these regions and e Health information systems were used as a case for this purpose. Methodology used was literature, interview, questionnaire, and observation. This paper presents an overview of the identified challenges and issues facing mobile app developers and the proposed data exchange solution. These findings have justified our ongoing research on interoperability of multiple databases through a single mobile applicationenMobile health servicesInternet-based health servicesE-health servicesHealth databaseHealth information systemHealth systemsTanzania health servicesMobile health applicationArticle