It is similar to Fifty Three's Paper app.
Pepper UI allows developers to create interfaces for viewing book/magazine/paper content in the usual manner we would flip and read through a normal book/magazine/paper.
Here are some key features of "PepperUI for iOS":
· Smooth animations
· Wisely uses memory
· Landscape & portrait orientation
· Delegate events
· of the box
· Written in pure Objective-C code
· iOS 5.0 or higher
What's New in This Release: [ read full changelog ]
· Nicer zoom transition/animation
· Many corner-case & race condition bug fixes
· Major performance improvement for low-end devices (iPad1, iPhone 3GS)
· Better memory handling
· More delegate methods