This study aimed to investigate how the use of a smartphone clicker app by a group of 390 Saudi Arabian male undergraduate students would impact their learning performance while participating in a computer science class. The smartphone clicker app was used by the students during peer group discussions and to respond to teacher questions. A conceptual framework identified teacher-student and student-student interactions, collaborative learning, and student engagement as three primary practices that could improve student performance when a smartphone clicker app was used. The relationships between these factors were tested empirically by participant completion of a self-administered online survey. This study found the use of a smartphone clicker app promoted increased teacher-student and student-student interactivity, leading to active collaboration learning by students and improved learning performance. No positive relationship was found between the smartphone clicker app use and increased student engagement. These results demonstrated the role of the smartphone clicker app in enhancing the learning experience of the Saudi undergraduate students included in this study, but not the overall student engagement. Further research into how use of a smartphone clicker app in classroom settings might promote student engagement to improve the overall learning performance is needed.