In order to the high-quality needs of modern elderly people in the information age, this study aims to develop a service function model for an elderly care app that better aligns with the usage habits and needs of the elderly. To identify and categorize the service function needs for the elder care app, develop a service functional needs model. This study invited 15 elderly users to participate in semi-structured interviews, ultimately identifying 20 core functional needs. These were then categorized into five dimensions based on Maslow's hierarchy of needs theory. Subsequently, the A-Kano model analysis method was used to quantitatively evaluate the five-level attributes of 20 items user needs from 175 questionnaires, determining the importance ranking of user needs. Finally, using the five-hierarchy attributes of needs and the corresponding priority rankings, a service function model for elder care App was developed featuring a primary functional interface comprising five major modules, ‘Assistant, Medical, Enjoyment, Esteem, and Doing', along with a secondary interface featuring 20 service function needs. The model aligns well with the various needs of the elderly across five dimensions, which could be used in the development and design of the elder care app. This paper guides the elder care service industry providers in formulating market strategies and enables prediction of elders' satisfaction with the future elder care service industry market.
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