Only the current version so far — new entries appear as the app ships updates.
慶應通信 e-Text is an education app by 慶應義塾大学通信教育部 with 1,000+ downloads (about 4.5K estimated). +14 installs in the last 7 days. Released Apr 20, 2017. Install growth, rank history, SDKs and ad networks.
From the store listing: “Students of Keio University distance learning course is the application which you can use for viewing of text.
You can view the hyphen already text.”