Only the current version so far — new entries appear as the app ships updates.
【体験版】２級ボイラー技士試験「30日合格プログラム」 is an education app by ReCorrect Inc. with 500+ downloads (about 810 estimated). Released Apr 12, 2022. Install growth, rank history, SDKs and ad networks.
From the store listing: “A full-scale learning app for the 2nd grade boiler engineer exam! Equipped with an efficient learning schedule and a mock exam that changes questions every time! If you only have this, you don't need a reference book!”
