📈Last 7 days+2 installs — 100% faster than the week before (+1) · 0/day since Oct 7
🏆Among Education apps bottom 42% by installs gained this week (947 peers growing)
🛠Updatesdormant · updated 165 days ago
Installs since launch
+6 installs
since Oct 7
Update history
1.4.0Jun 2, 2026 · seen Oct 19, 2026
26/06/02 v1.4.0 화면 UI 개선, 시험 결과 공유 기능 추가 외
Only the current version so far — new entries appear as the app ships updates.
청구기호 정렬퀴즈 - 도서관 필수 앱 is an education app by Lee Dae Young with 500+ downloads (about 859 estimated). +2 installs in the last 7 days. Released Jun 7, 2022. Install growth, rank history, SDKs and ad networks.
From the store listing: “Now, learn the Korean Decimal Classification (KDC) rules—the order in which books are organized in libraries—and the call number system easily and enjoyably on your smartphone.”
