As a note, I'm not worried about installing the IPA files (see 'How do I backup and restore my IPA app backups in iTunes 12.7?'), I just need the IPA files as a developer looking for some basic information on the apps. Now that Apple has removed the ability to access the iOS App Store in iTunes 12.7 on Mac/Windows (See MacRumors article), I can't find any way to download an IPA file from the App Store.