The Color Picker by User Studio is a cool, highly intuitive color picking utility to integrate in iPhone apps.
CCGLTouch: iOS wrapper for Cinder
This wrapper eases the use of Cinder within a typical Cocoa project. Thus allowing C++/Obj-C creative coders to build iOS (iPhone, iPad) apps showing several "Cinder sketches" in tabs or SplitView configurations, and using UISlider's, UISwitch's, etc.
CCGL: Mac wrapper for Cinder
This wrapper eases the use of Cinder in a typical Cocoa project for Mac OSX. Thus allowing C++/Obj-C creative coders to build desktop applications bearing several "Cinder sketches" as well as Cocoa sliders, buttons, etc. to interact with these sketches.