Smartsounder is a system to connect fishing bite alarms to mobile phones. It is based on Bluetooth Low Energy (BLE) or Bluetooth 4.0 which allow the sounder box outputs from many different bite alarms to connect to your Apple device (iPhone 4S and above). The app will monitor both the output and the physical connection of the alarms and can detect when an alarm is removed, switched off or out of battery. It will also monitor the Smartsounder battery itself and warn of any out of range conditions. Range is device dependent but is typically fifty metres. The sound outputs of several popular bite alarms can be selected so your phone or pad will sound like your favourite alarm irrespective of which alarm you are actually using. Each 'rod' can have its own colour to light up when appropriate and vibration can be selected (on iPhones). The app works in both foreground and background with alerts waking the phone with sound, light and vibration (where available). Can be used as a backup to conventional alarm receivers or as the primary system with its powerful anti-theft function protecting not only the Smartsounder hardware but also your bite alarms.