One of the things that you need to work your head around when developing iOS apps is codesigning. Simply put, code signing is like adding your signature to an app. Your users know that the app comes directly from you and has not been modified since you last signed it. What do you use to sign your app? You will need a certificate issued by Apple. This certificate used to sign your app, allows the addition of app services, installation to devices and submission to the AppStore. (to be continued)