Stimulating learners’ engagement in a large class is one of the most important issues for language educators (Lamb, 2017). The present review aims to offer a review of Mentimeter for creating interactive presentations in large language classrooms. Driven by the continuous development of mobile technologies, language educators and teachers apply ‘Bring Your Own Device’ (BYOD) approach in using technology in classes. BYOD allows teachers and students to use their personally owned device and invite them to actively participate in various forms of in-class activities (Stowell, 2015). Mentimeter is an engaging and interactive Learner Response System (LRS). It allows real-time interaction between language educators and learners via mobile devices. At present, Mentimeter has over 200 million users, and 90,000 customers across more than 220 countries and territories (Mentimeter, 2021), and the application of this tool in language education deserves a deep and critical review.