The aim of this study is to gain a deeper understanding of  EFL  students' perceptions of difficulties they encounter using the Duolingo application as a language learning media. The study's rationale is the crucial influence of these perceptions can provide valuable insights contributing to the exploration of students' difficulties while using Duolingo. The study will employ a qualitative method through semi-structured interviews for data collection. The sample consists of 10 students from the English Language Study Program Association who have consistently used Duolingo for at least 3 months. Furthermore, a Google Form questionnaire will be utilized to gather initial data on frequency, motivation, comprehension, skill development, feature usage, and perceived effectiveness of Duolingo for EFL learning, providing a starting point for this investigation. The research findings will serve as a reference for future studies, particularly in the development of further research to identify solutions to the problems discussed, explore effective strategies for using Duolingo, and provide valuable insights for the application's ongoing development. The researchers aim to interpret the findings accurately within the given context, leveraging the semi-structured interview approach to gain a comprehensive understanding of students' perceptions and challenges they face when using Duolingo.