Comic Book Day is a free iPhone app developed by Vincent Tourraine. It falls under the category of Education & Reference and specifically caters to the subcategory of Books. With Comic Book Day, you will never miss the latest issue of your favorite comic book.

This app allows you to easily manage your comic book library and stay informed about new releases. You can import volumes directly from a vast database of over 380,000 comic books, manga, and other international publications. Additionally, you can learn more about the authors and characters featured in your books.

Comic Book Day helps you organize the comic books you have already read and provides recommendations on what to read next. You can also share your favorite issues with friends and discover new books to love. The app ensures that your library stays synchronized across all your devices using iCloud.

To make things even more convenient, Comic Book Day includes a "What's New This Week" Widget. This widget allows you to keep an eye on the latest releases without even opening the app.

With its user-friendly interface and comprehensive features, Comic Book Day is a must-have app for comic book enthusiasts who want to stay up-to-date with their favorite titles.