Only the current version so far — new entries appear as the app ships updates.
消防設備士 乙4 甲種4 第4類試験対策アプリ is an education app by attractive.app with 5,000+ downloads (about 5.4K estimated). +6 installs in the last 7 days. Released Nov 2, 2021. Install growth, rank history, SDKs and ad networks.
From the store listing: “This app is designed for the 2026 Fire Protection Equipment Technician Class 4, Type B, and Type A exams. It includes only frequently tested questions. The question-and-answer format allows for learning in short bursts of free time.”