Only the current version so far — new entries appear as the app ships updates.
MC問題 is an education app by Abitus Inc. with 5,000+ downloads (about 8.3K estimated). +32 installs in the last 7 days. Released Aug 18, 2019. Install growth, rank history, SDKs and ad networks.
From the store listing: “A learning app that allows you to practice anywhere. The long-awaited Android version is here! !”