책가방 - 권장도서, 도서관에 있는지 한 번에 확인 is a books & reference app by atheling44 with 10+ downloads (about 11 estimated). Install growth, rank history, SDKs and ad networks.
From the store listing: “With the official recommended book list for children to adults, we show you the books you can borrow right now at your library and their shelf locations all at once.”
