The most common Korean word for “app” is 앱 (aep). 「app」는 한국어로 앱.
Learn 앱 free — flashcards, audio and review →「앱」 단어장으로 무료로 외우기Words and levels: TOPIK I essentials (National Institute of Korean Language standard curriculum, KOGL Type 1) · examples: Cheesepotato