app name: 일단(日単) - JLPT 단어 암기
download: https://apps.apple.com/kr/app/%EC%9D%BC%EB%8B%A8-%E6%97%A5%E5%8D%98-jlpt-%EB%8B%A8%EC%96%B4-%EC%95%94%EA%B8%B0/id6756475564