Well, it's not really hacking, but it can help you identify some parts of the user interface ... Do the following:
1- Create a new project on Xcode (in fact, this is not what you choose)
2- Connect the device to the computer.
3 Profile the project on your device.
4- In the profile, select Core Animation.
5- In the options, select Color blending layers. It will look like this: 
6- Turn off the device while the profile is running. Your phone will now look like this:

7- Go to the application you want to check.
Although you cannot see the code, it can help you identify key parts of the application. To return to normal operation, you can reboot the device or simply go to the profile and start it again and uncheck the Color mixed layers box.
Peres
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