As mobile technology has multiplied in the educational sector, it creates new opportunities for improving the learning experience of students at all level of education. Besides, the use of mobile technologies has supported the implementation of mobile learning. Therefore, the researcher felt necessary to utilize the mobile devices as a learning media to help the students to increase their skills in TOEFL materials. The objectives of this research explained the students’ need, conducting the media they needed, and explained how the effectiveness of the media developed. The method of this research was research development based on ADDIE procedure and applied the pre-experimental design. The students’ population at the Walisongo language development center were 15 students, and the samples were 15 students of pretest and posttest class. This research was conducted through the following procedure: the first was conducting the students’ need analysis to know the students’ need. Next, designing and developing the media, implementing the media, and evaluating. In the implementation phase, researcher conducted pre-test and treatment. Referring to the research findings, it revealed that the pre-test mean was 40, while the post-test mean was 65 and the effectiveness of the media was moderate with value 59.6 (quite effective). It said the media gave a positive contribution to students in enhancing their skill in TOEFL, especially structure and written expression. The implications of this research provided useful information about how to develop TOEFL learning media and learn TOEFL by the easily accessed media. The researcher hoped the students try to use technology in their learning process