In iOS 7, the document directory of the iOS simulators can be found in:
/Users/Sabo/Library/Application Support/iPhone Simulator/
However,
update: Xcode 11.5 • Swift 5.2
if let documentsPath = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first?.path {
print(documentsPath) // "var/folder/.../documents\n" copy the full path
}
Go to your Finder press command-shift-g (or Go > Go to Folder... under the menu bar) and paste that full path "var/folder/.../documents" there and press go.