Here is a nie collection of eBook reader apps.enjoy1.iBooks
2.Overdrive media console
Read eBooks and listen to audiobooks from your library using OverDrive Media Console on iPad, iPhone, and iPod touch. More than 22,000 libraries worldwide offer titles via OverDrive, so download the app and add your library today.
The Kindle app is optimized for the iPad, iPhone, and iPod touch, giving users the ability to read Kindle books, newspapers, magazines, textbooks and PDFs on a beautiful, easy-to-use interface. You’ll have access to over 1,000,000* books in the Kindle Store plus hundreds* of newspapers and magazines.
Visit Kobo and browse more than 3.5 million free and affordable titles in the Kobo Store, including bestsellers, award winners, new releases, classics, and hidden gems. All your books sync right to the app
eBooks.com's Ebook Reader lets you read your favourite books on the go. Go to eBooks.com and choose from a massive collection of popular books that you can download in a jiffy. Or read your books online from any internet-connected device.