Cellular Data Notifier

All it takes is one time when you think you are using wifi and it turns out you were burning through an expensive cellular data cap to want a more obvious notification of how you are receiving your data. Cellular Data Notifier is a small utility that listens to changes in connectivity and sends you a notification when you are using the cellular network as your data source. The application provides a simple interface to enable / disable the utility. Once enabled, Cellular Data Notifier will listen for when you are using cellular data even when the application is closed. The only permission used is the is the ability to access network connectivity information. Cellular Data Notifier is small, unobtrusive, and could help avoid a surprise windfall for your cellular provider.