To some extend the same problem applies to application code. As long as the hardware and platform are closed, we don't really know what is going on when the app

To some extend the same problem applies to application code. As long as the hardware and platform are closed, we don't really know what is going on when the application is executed. Despite this, opening the application would be of course a step to the right direction. Not because it would guarantee that Apple is not doing bad things, but because it would help others spot problems that may be there by accident.