Digital Top 20 Free Book Apps of the Week By Dianna Dilworth|September 8, 2011 Share By Dianna Dilworth|September 8, 2011 Share iBooks was the most popular free app in the Apple App Store this week, according to research from AppData, Inside Network’s data service that tracks app and developer leaderboards.Explore these 20 free apps and find out what kind of literary apps succeed in this crowded marketplace. To prepare for Mediabistro’s upcoming Publishing App Expo on December 7-8, we spotlight the top grossing book apps, the top paid Android books apps and the most popular free apps every week.Below, we’ve listed the top free iOS apps of the week–linking to App Data’s research about each individual app, including historical charts, developer information and download details. 20 Top Free Apps (Books Genre)September 8, 2011 1. iBooks 2. Kindle 3. NOOK for iPhone from Barnes & Noble-Read 2 Million Books, Free Books 4. Audible 5. Comics 6. The Little Red Riding Hood HD – So Ouat! 7. Audiobooks 8. 1 million FREE Books – Read Kobo eBooks! 9. Weird Facts 1000 10. B&N Bookstore 11. Unlimited Free Books – Wattpad eBook Reader 12. Google Books 13. OverDrive Media Console – Library eBooks and Audiobooks 14. Bible+ 15. Love Quotes 500 16. Sex-Facts 500 17. å˜å½¢é‡‘刚3å‰ä¼ -å¥ åŸºæ—¶ä»£ 18. Marvel Comics 19. 100+ Horror Stories 20. iScroll Adweek Adweek