cognikey - 50歳から始める認知症予防、リスク診断 is a health & fitness app by 公益財団法人 日本漢字能力検定協会 with 500+ downloads (about 937 estimated). Install growth, rank history, SDKs and ad networks.
From the store listing: “Cognkey is an app that provides users with information about their brain health to help prevent dementia.”
