Only the current version so far — new entries appear as the app ships updates.
ホシオの算数クエスト ４年 is an education app by Fuji-Studio with 500+ downloads (about 620 estimated). Released Jun 17, 2026. Install growth, rank history, SDKs and ad networks.
From the store listing: “Complete all 19 units and 3,420 questions of 4th-grade math with Hoshio, the light blue whale, on a quest. Completely free.”
