Sangwook Park

startup mobile business korea mobile application development education ir apps 스타트업 iot international training tourism application building multiverse metaverse odin non-profit virus technology food commerce flower design app current ui/ux deer diary 일기장 개발기획서 어플 어플리케이션 서비스소개서 교육 투자발표 에듀케이션 hacka-a-thon pitch 해커톤 데크레센도 사물인터넷 transportation system school smart launcher edu-tech crescent