No, but it's recommended.
Since the old app (Apple) and the new RxVigilance mobile version are separate applications, you do not need to uninstall the old one before using the new version. If your subscription to the old app is still active, you can continue using it alongside the new app.
For the best experience, we recommend uninstalling the old app once your subscription expires.
To access the new version, purchase an RxVigilance essential or complete licence from the Online Store, then download the app from the App Store or Google Play.