2級ボイラーの森（2級ボイラー技士試験対策アプリ）

2級ボイラーの森（2級ボイラー技士試験対策アプリ） is an education app by 合同会社OLA with 1,000+ downloads (about 2.8K estimated). +70 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.

From the store listing: “A learning app for past questions of the Class 2 Boiler Technician Examination. Includes 440 questions from the past 11 exams + automated question generation based on the forgetting curve for fast learning!”