単語で覚える韓国語 - 音声付き単語帳でハングル学習・勉強 is an education app by Taro Horiguchi with 100,000+ downloads (about 113K estimated). +228 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.
From the store listing: “Learn 1600 Korean words and expressions. Check pronunciation with audio, confirm usage with example sentences, and gradually memorize them through 100 lessons and tests.”