第一種衛生管理者|過去問と解説付き試験対策 is an education app by dxapp labo with 5,000+ downloads (about 8.5K estimated). +303 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.
From the store listing: “Prepared for the 2026 exam. Study five past questions each for the Class 1 Occupational Health Manager exam. Efficiently prepare for passing the exam with full explanations, review of weak points, and a mock exam.”