The landscape of Education 4.0 has changed recently due to the fast technology that has advanced, especially in educational applications (apps). Educational apps have been created from simple applications such as yes or no quizzes and boring subjective questions to more entertaining apps like fun assignments and game-based activities. Therefore, this study aimed to highlight the key characteristics of educational apps. The classification of educational apps into six primary features is done using the deductive technique. In conclusion, educational applications are required to include six key components if they're going to effectively impart knowledge to users.