[universenz]

Indeed. In particular is when an update is released for an app on the App Store where the developer removes or moves features to subscription or 'in app purchase'. "Free to Fee". If this isn't mentioned in the update notes, and you update, there is no way to go back to the functionality you were 'happy with' at "Free". Given most users exchanged their privacy for "free", and typically that exchange is irreversible once completed, the option to revert to a previous version should be made available.