The content of this application is divided into 4 kinds of parts, namely:
1. Introduction to Ball and Racket
2. Serving Moves Without Ball and Racket
3. Serving Movement With Ball and Racket
4. Practice Service
Feature:
1. Access content without using online networks
2. Attractive appearance
3. The size of the application is relatively small
4. Dark Mode
5. Each content is equipped with voice dubbing.