Comic book apps continue to lead the top grossing iPad apps again in the books genre this week. According to research from AppData, Inside Network’s data service that tracks app and developer leaderboards, Comics is the No. 1 top grossing iPad book app, followed by DC Comics at No. 2., the Marvel Comics at No. 3 and  The Walking Dead app, based on comic book series, at No. 10. Digital publishing firm comiXology powers all of these comic book apps.

Solar System for iPad, a $13.99 digital picture book about the planets from Touch Press, made the list at No. 6 this week.

To prepare for Mediabistro’s upcoming Publishing App Expo on December 7-8, we spotlight the top grossing book apps every week–helping our readers discover and analyze successful content. (Today is the last day to get the Early Bird discount and save $100 on your registration).

Below, we’ve listed the top ten grossing iPad apps of the week–linking to App Data’s research about each individual app, including historical charts, developer information and app pricing details.Tuesday November 29, 2011

1. Comics Comics
2. DC Comics DC Comics
3. App Store - Marvel Comics App Store – Marvel Comics
4. App Store - DC Comics App Store – DC Comics
5. Another Monster at the End of This Book...Starring Grover & Elmo! Another Monster at the End of This Book…Starring Grover & Elmo!
6. Solar System for iPad for iPad on the iTunes App Store Solar System for iPad for iPad on the iTunes App Store
7. Disney Princess: A Royal Christmas Disney Princess: A Royal Christmas
8. App Store - MeeGenius! Kid's Books App Store – MeeGenius! Kid’s Books
9. App Store - The Monster at the End of This Book...starring Grover! App Store – The Monster at the End of This Book…starring Grover!
10. App Store - The Walking Dead App Store – The Walking Dead