Here you can download the free Cheat Sheet for iOS User Interface Design
"When you are designing a lot of applications for Apple’s touch devices like the iPhone or iPad you often have to follow some conventions regarding sizes or radii of Icons, Buttons or Tables. Because it is always a big time loss if you have to search on the Web for this information again and again, I’ve put the most important specifications into a nice iOS Design Cheat Sheet."
The iOS Design Cheat Sheet is a great resource for iOS designers and developers. Quickly find all important data about Apple devices when it comes to App development.
"More than a year ago, I published the iOS Design Cheat Sheet, a collection of useful data about iOS devices and things you have to keep in mind when designing something for iOS. Since the last update of my Cheat Sheet, a lot has changed in the world of Apple’s mobile devices. Designers now have to deal with a retina resolution iPad (aka. “The new iPad”), and a new 16:9 format iPhone 5."
"This is an App Icon Template that, through Smart Objects in Photoshop, attempts to automate the process of rendering the various sizes that needs to be bundled with iOS Apps.The idea is to edit the largest size and have the smaller sizes automatically rendered enabling a much quicker workflow when designing icons."