These mostly come from Apple's Human Interface Guidelines (http://developer.apple.com/library/ios/#documentation/UserExperience/Conceptual/MobileHIG/Introductio

These mostly come from Apple's Human Interface Guidelines (http://developer.apple.com/library/ios/#documentation/UserExperience/Conceptual/MobileHIG/Introduction/Introduction.html http://developer.apple.com/library/ios/#documentation/UserEx...) but people seem to overlook them. Very cool to see an app that got feedback from Apple and did something new and compelling with it.