APN Notificator is a free utility and tool app developed by Danpal for Android devices. The app helps users keep track of which Access Point Name (APN) is in use and its state. It also displays an icon on the status bar and a permanent notification that provides information on the APN name and its status.

One of the most useful features of APN Notificator is the shortcuts it provides. You can quickly navigate to the system settings for selecting the APN and Tethering. Additionally, you can customize the icon color for each APN and select the notification background color.

Please note that some hardware manufacturers or carriers' Android customization can cause the app to malfunction. Overall, APN Notificator is a useful tool for anyone who regularly uses different APNs and wants to keep track of them.