The information system for public relations via mobile application (PPSTC system) is considered a tool to promote public relations and information perception in digital age based on the application of new ideas that can respond to and accommodate the current world situations. This research aimed to analyse and develop the PPSTC system; and assessment of the use of the PPSTC system. The participants consisted of experts from various institutions in higher education, including and teachers, staff, students of Pakpasak Technical College, and outsiders aged 17 to 25 years. The data collection tools are as follows: the PPSTC system; the effective evaluation form; the assessment form for users' proactive perception of information; and the assessment form for users' satisfaction. The results of the study indicated that (1) the overall performance evaluation was highly; and (2) the overall users' perception of information and users' satisfaction were high.