If you’re getting as far as a black screen on iOS then you’ve got another option: get the console output.
Create a development build and use XCode to put it on the device:
- Go to XCode -> Windows -> Devices and simulators
- Plug your device in and select it (don’t do wifi sync for this)
- Install your IPA using that screen
- Before you load the app, click the Open Console button, select your device on the left, and enter part of your app name as a process filter.
- Run the app and get ready to scroll through a lot of output.
For some reason this window will purge log lines while you’re reading it, so shift-click to select everything and then go Edit -> Copy. Exactly like that, because this window has some of the worst UI in the entire OS and doesn’t support select-all or keyboard shortcuts for copying. Toss it in a text editor and have fun reading.