One of the pricing points for Notification Hubs is "active devices". Active devices are defined as follows on the pricing page:
Active devices are devices eligible to receive notifications. They are defined as unique registration IDs for devices using Google Cloud Messaging or Amazon Device Messaging, channel uniform resource identifiers (URI) for devices using Windows notification service or Microsoft push notification Service, or device tokens for devices using Apple push notification service.
Our application (iOS with APNS and Android with FCM) registers new devices as users install the app, however, we never unregister devices.
Do Notification Hubs manage what is defined as an active device? For example, if someone starts using our app and their device is registered, however, they uninstall the app a week later. Will this device ever become inactive or will I always be paying for it even though it no longer exists? If Notification Hubs does not manage "active" devices for me, how can I properly define and clean up old devices that are no longer in use so that I am not continually paying for them?
