I'm going to use some application both on my iPad and iPhone (both devices on iOS 6.0.1). The data that I will operate in the applications are synchronized through the cloud owned by application developer.
Potentially, the developer can tie my personal data with the data that he puts into the cloud.
Q: What personal information about the owner of the device an application developer can obtain using documented and undocumented features of the iOS SDK?
For example: - Apple id - Phone number - Card number - Email - First Name / Last Name, etc.