This paper is a practical report of exchange activities using mobile apps that are increasingly used as a means to enhance the learning effect of languages. This study is aimed to investigate the applicability of mobile learning according to the results from conversations using the KAKAO TALK app for ten weeks by fifty Korean university students who are Japanese learners and fifty Japanese university students who are Korean learners. The results are given as follows.
Firstly, since students were able to practice what was studied in and out of language classes, their willingness to learn the target language through exchange learning increased for both Korean and Japanese university students. Besides, the mutual interests of the partner country were deepened due to increased learning motivation. However, because of a short-term relationship, it was difficult for each student to fully expand their languages.
Secondly, it revealed that the exchange activities became a place to practice autonomous learning using not only text exchanges but also photographs and videos. Moreover, since it could be a real-time activity regardless of time or place, they were able to communicate realistically with each other.
Thirdly, the exchanges activity concerning daily life conversations with the native speakers who are a similar generation with, made the students deepening their interests in each other's country and culture.
Fourth, it is important for each student to have this activity with aggressiveness since mutual feedback should be rapidly done. In addition, it found out that the teacher’s role is also in importance for future exchange activities by group allocation taking into account student’s individuality.