Only the current version so far — new entries appear as the app ships updates.
Smile-3 is an education app by 株式会社ウィライツ with 5,000+ downloads (about 6.4K estimated). +21 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.
From the store listing: “This is a My Page application for customers using the Smile-3 system.”