In 2015, Naver representative cafe Tennis Holic developed an appthat makes it easier for players and clubs to access various tennisinformation.

Jeongjinhwa YouTube playlists and sort by technology tennis tennislessons and tennis enthusiasts have been making videos for easyaccess.

초, 중, 고, 대, 실업팀에서 선수생활하고 또한 지도자로서의 지도경험을 레슨영상으로 담아서 제 테니스노하우를 테니스를사랑하는 사람들에게 전하고 싶어서 앱개발을 하였다.

To classify Youtube jeongjinhwa doubles tennis lessons and gamesvideos to the playlist was designed to tennis players andenthusiasts can easily access

Tennis skills theory and the app was produced by textbook form.

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