dブック is an e-book app that allows users to read manga, light novels, and novels on their smartphones, tablets, and computers. It offers a wide range of approximately 600,000 titles, including popular manga that have been adapted into anime and dramas, as well as shonen manga, shojo manga, seinen manga, and women's comics. There are also up to 3,000 free trial reading titles available. The app is not limited to Docomo users and can be used by anyone. In addition to purchasing e-books, users can earn and use d points for payment, and there are ongoing campaigns for first-time buyers.

The dブック app has several features that make it user-friendly. It offers a wide range of popular titles in various genres, including manga and novels. Users can explore recommended works, check best-selling rankings, and manage their purchased and viewed works in the "My Bookshelf" feature. The app supports offline reading and vertical reading for manga. It can be used on up to 10 devices with one d account. dブック also offers original comics and a variety of adult works such as BL and TL.

dブック offers a wide range of genres, including novels and literature, light novels, business and practical books, hobbies and lifestyle, photo collections, magazines, foreign books, BL novels, TL novels, male comics, female comics, BL comics, and TL comics. It provides popular works such as "推しの子," "東京卍リベンジャーズ," "呪術廻戦," "キングダム," "転生したらスライムだった件," "ブルーロック," "アオアシ," "SPY×FAMILY," "鬼滅の刃," "ミステリと言う勿れ," "薬屋のひとりごと～猫猫の後宮謎解き手帳～," "チェンソーマン," "ザ・ファブル," "ONE PIECE モノクロ版," "コーヒー＆バニラ," "無職転生 ～異世界行ったら本気だす～," "プロミス・シンデレラ," "ゴールデンカムイ," "とんでもスキルで異世界放浪メシ," "山田くんとLv999の恋をする," "うるわしの宵の月," "転生賢者の異世界ライフ～第二の職業を得て、世界最強になりました～," and "ザ・ファブル　Ｔｈｅ　ｓｅｃｏｎｄ　ｃｏｎｔａｃｔ."

dブック is recommended for those who enjoy reading manga and light novels, those who want to try reading e-books, and those who are looking for a user-friendly app to manage and read their favorite books. Non-Docomo users can also use dブック as long as they have a d account. The app can be downloaded on compatible devices, and users can access their purchased books from the "My Bookshelf" button. The app also features new manga releases and recommended titles on the home screen.