One of my apps got a big update with some mixed reviews, I'm interested in trying the new version, but won't do it if I can't roll back. For pre-iOS 9 systems, I heard you can backup ipa file from iTunes on PC, update the app on iPhone, and then if needed, overvrite back from iTunes and sync. But it doesn't work now - there's no ipa file for that app after iTunes sync.
What are my options? I've heard about programs like iMazing, but have a feeling that for iOS 10 it will just restore the app data and not the whole app version.