Operating system: iPhone OS-Derived from the Mac OS X, shares the Darwin foundation. The OS has four abstraction layers, the core OS layer, the core services layer, the media layer and the cocoa touch layer. The OS uses less than500 MB of the device’s memory. Unable to multi-task.Coding the App: – The third step is to code the app! This is where the role of app developers is most vital. But even before coding, it is important for the client to sign a Non-Disclosure Agreement, or NDA, with the developer he has hired for developing the app. This is important since it will ensure that the uniqueness of the App is preserved and no one else can steal it.Remote is a program that is not used daily, but is a software that’s surely going to be functional in parties. You are able to manage songs without leaving your guests since you can access the music library from anywhere at home. As long as the iPhone and iTunes are connected on the same Wifi network, your song can be played with just a tap from your fingertips.