The purpose of this research and development project are; to design and assess quality infographics via an Android Operating System (OS) application for the royal graduation ceremony of Ramkhamhaeng University. The research results found that; (1) The infographics for the royal graduation ceremony of Ramkhamhaeng University were offered on the application RUGrad Version 1.0 on Android OS and included these following items on its menu (1.1) Procedures for the graduation ceremony, (1.2) Graduation registration, (1.3) Attendance report, (1.4) Rehearsals, (1.5) Royal graduation ceremony day, (1.6) Graduates’ attires, (1.7) Practices for monks, (1.8) Prohibitions for graduates, (1.9) Diagram for the graduation ceremony process, and (1.10) How to use the application. (2) The quality of infographics shown via the Android OS application was found to be suitable in all areas with the overall value of 0.90. (3) Graduates of Ramkhamhaeng University participating the 2019 royal graduation ceremony were found with an overall high level of understanding of the ceremony information presented with infographics via the Android OS application (X̄ = 4.49). They were also found with an overall high level of satisfaction towards the infographics for the royal graduation ceremony presented via the Android OS application (X̄ = 4.44).