Post Black Belt (주짓수 다이어리, 일지)

It is a mobile training record diary app for Jiu-Jitsu practitioners.

Most Jiu-Jitsu practitioners consistently invest a lot of time, more than three times a week, but due to the nature of Jiu-Jitsu, which has a variety of techniques, it is not easy to remember all the skill classes. was developed to help all trainees who are steadily training to become black belts.

After completing the journal through , the user can systematically check the diary in two ways.

1. Check calendar format diary based on diary category

2. Check the diary in the form of a skill tree, sorted by skill category

*All diaries are stored only on the user's device and can only be viewed personally.

**Caution: Deleting the app will delete all data along with it.