Only the current version so far — new entries appear as the app ships updates.
HSK音声ポケット is an education app by SPRIX Inc. with 10,000+ downloads (about 21K estimated). +128 installs in the last 7 days. Released May 25, 2020. Install growth, rank history, SDKs and ad networks.
From the store listing: “A convenient app that allows you to listen to the voice attached to the official Chinese official HSK official certification book”