The Frederick Scanner Pro is a live audio stream of Frederick, Maryland Police, Fire, Rescue, and Highway communications. Just start the app, press the green button and you're tapped into the Frederick scene. The Pro version includes: - A new look. - Vastly improved audio (Thanks to Unication USA) - Audio level meter. - Auto-reconnect if app is disconnected from network. - Bottom toolbar - FredScanner Tweets - Direct Links to Live CHART Traffic Cams. - Direct Links to Frederick Webcam shots. This app is very useful if you live, or are in, Frederick, MD, USA. **This app streams audio from the internet, please check your cellular data plan before using.