I'm planning to build an iOS and Android app with custom advertising on some screen. The custom advertising does not use advertising identifier provided by iOS(IDFA) or Android.
my questions are for the app review from both Apple and google,
Should I still need to indicate that my app has advertising?
Is the use of advertising is mandatory in order to provide custom ad that does not use the advertising identifier?
Is it possible that Google or Apple reject the app if i don't use the Advertising identifier but still provide custom ad?