ブック放題 is a books & reference app by Viewn Corp. with 100,000+ downloads (about 435K estimated). +357 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.
From the store listing: “A manga and magazine app where you can enjoy unlimited reading of 800 magazines, 400 travel guides, and over 65,000 manga titles!
Book放題 offers a wide selection of manga, including weekly magazines, fashion magazines, and lifestyle magazines updated daily, as well as domestic and international travel guides and manga…”