Main Article Content
This research deals with the use of development applications using mobile devices as tools for mixed learning models. However, in developing learning applications, one important concern is the user interface (UI). Therefore, the purpose of this research is to find out which UI design components are easy to use and according to the user to be more user friendly, so that the purpose of using mobile applications for education can be realized. This study covers design principles that are appropriate for applications developed for platforms. Based on research, user interface testing has been carried out from 5 user interface principles and analysis using the System Usage Scale (SUS) given to 12 respondents. The results showed that the majority of respondents agreed that the mobile application developed had met the requirements of the user interface element.