NotifyCue helps users create local notification demos without signing in or connecting to a server. Choose a notification style, edit the sender, display time, title, and message, preview the result, then send immediately or schedule it for later. The history page keeps recent local demo records so they can be restored or deleted during testing. Settings show notification permission, floating notification settings, exact alarm scheduling, and vibration feedback. NotifyCue uses notification permission to display local alerts, exact alarm permission to trigger scheduled demos, and vibration permission for optional haptic feedback. Data is stored locally on the device.