Only the current version so far — new entries appear as the app ships updates.
小説家になろうビューア - 公式アプリでWeb小説が読める is a books & reference app by 株式会社ヒナプロジェクト with 50,000+ downloads (about 97K estimated). +2.3K installs in the last 7 days. Install growth, rank history, SDKs and ad networks.
From the store listing: “Japan's largest online novel site with over 1.2 million titles to read!”