I am using Flashcards Deluxe on the Android phone and iPad. But there is a problem with TTS in iPad. When synchronized, the TTS settings are initialized and the TTS sounds in the default system language. This is not the case with Android, but only on the iPad.
When comparing the settings of the backup file after syncing from the Android phone to the iPad, the siri-txt-voice item disappears from the Excel file on the iPad.