It's an application for Korean typing practice in the Chunjiin keyboard.
You can practice Korean keyboard without installing the Chunjiin keyboard.
It provides Chunjiin and Chunjiin PLUS keyboards.
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개발자 연락처 :
장도곤 유엔로 246
108동 1505호
남구, 부산광역시 48409
South Korea 157-71-00233 2024-부산남구-0797 부산광역시 남구청