Only the current version so far — new entries appear as the app ships updates.
ナレッジバンドル|資格・検定の過去問題集 is an education app by knowledgebundle with 50+ downloads (about 79 estimated). +79 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.
From the store listing: “Unlimited access to study guides for 43 certification exams, including the IT Passport, G-Test, and Class 3 Electrical Engineer.”