1. Google Books

This app provides access to more than 3 million Google eBooks on your iPad, iPhone or iPod Touch. You can carry all your favorite books wherever you go on your mobile device. You can use the Google eBooks tore to shop for books and read them in your app. You can change the font, and get details about the book. You can also search within the book. This app offers you with offline reading mode, Night-reading mode and Voice Over support. Free preview pages are available. You can store unlimited number of books in the digital cloud. You can easily manage your library.

2. Audible

Audible.com the leading provider of digital audio books and lots more on the internet is now accessible on your iPod Touch and iPhone. This app consists of the all-embracing audio book experience ever and comprises of WiFi delivery of your Audible.com files, optimized audio book player, comprehensive listening stats and lots more. Sleep mode, bookmarking, chapter navigation, button free mode, variable narration speed and play as you download are some of the best features of this app. You can browse more than 100,000 digital audio books and lots more from Audible.com. You can earn badges and also check your own listening habits. You can also receive insider details about the author events and lots more with the Audible News feed.

3. B&N Bookstore

This is the official app of the Barnes & Noble Bookstore. It can be a very good companion for people who love books and who need quick access to the books world. You can make use of the camera of your iPhone to search and shop for more number of books, music CD’s and DVDs and also browse all other things provided in the online store. The store locator present in this app will assist you in finding the Barnes & Noble superstore present nearby you and help you see the forthcoming events and obtain directions to the B&N store.

4. Books- 23,469 Classics to Go.

You can download nearly 23,469 classic books for free of cost using this app. The developers of this app have taken all those classic books and packed them up to enable the users to download and read them with their e-Reader. All the books have high resolution covers and reviews. You can the plays of Shakespeare, autobiographies of Franklin & Carnegie, the letters of leaders, collected works of masterminds, the philosophy of Seneca & Plato. You can get them along with other books. This app is compatible with iPhone, iPad and iPod Touch however it requires iOS 4.2 or higher.

5. Weird Facts 1000

You can get tons and tons of weird, cool, odd and splendid fun facts using this app. You can browse through all these weird facts and learn new things every day. You can easily impress your friends with all the fun facts. You can also email these weird facts to your friends. If you own an iPhone that runs on iOS 4.0 or higher then you can even SMS these fun facts to them. You can also paste the weird facts to Twitter or Facebook by just tapping the clipboard. This app is compatible with iPhone, iPad and iPod Touch and requires iOS 3.0 or higher.