I'm running iosiOS 14.0.1 on an iPhone 11 and I have an appication that is no longer on the App Store. (By the developer, who abandoning the app.)
The app in question was a manga app that let people read and favorite mangas that they liked. I am trying to find a way to get my list of favorite mangas from the app without manually typing out every mangas name (which for me is 2222 mangas long).
Is there a general way to access specific app data on an iPhone that doesn’t rely on knowing exactly how a specific developer made their app?