The use of non-face-to-face services and kiosks has expanded due to the development of information and communication technology and accelerated during the COVID-19 pandemic. In South Korea, the use of self-service kiosks has grown to about four times pre-pandemic levels. Therefore, it is pivotal for students with intellectual and developmental disabilities to learn how to use self-service kiosks in the community. The purpose of this single-case study design study was to examine the efficacy and feasibility of a kiosk education app intervention that simulates a fast-food restaurant kiosk. Findings demonstrated a functional relationship between the use of the kiosk education app intervention and kiosk task completion. While special education teachers perceived it as a useful tool for teaching self-service kiosks, the social significance of the change is limited due to the limited mastery levels achieved. Implications for future research are discussed.