International Journal of Web Applications Yasir Riady 12 1 2020 https://doi.org/10.6025/ijwa/2020/12/1/21-29 http://www.dline.info/ijwa/fulltext/v12n1/ijwav12n1_3.pdf In order to provide more easiness of access, facilities and user-oriented for tutorials, registrations and examination, Universitas Terbuka (an Indonesia Distance Learning University) creates learning material based on Android device application. It is a new platform in distance education system and in line with the increase usage of smart phone in Indonesia, not only in communication but also in learning purpose. The fact revealed that more than 10.000 users had downloaded this application in the beginning of 2017. This paper aims to explore the implementation of android device application in digital teaching material. This paper evaluated the platform’s effectiveness and efficiency through 6 measurements; they are system quality, number of users, purposes, simplicity, user-oriented of application and time of use. It employed 55 respondents as the sample by using questionnaire, interview and applied a descriptive conceptual. The conclusion that the application of Android Based Digital Teaching Materials is really help students at the Universitas Terbuka in Indonesia to understand and comprehend materials for online learning, face to face tutorial and also final examination.