Used to Flash programs to AVR MCU's as found on Arduino Boards via Bluetooth
Quickstart guide is found here: http://avrf.infomultiverse.com .
It works with almost any Bluetooth module. Included is a serial terminal monitor which works via bluetooth to see program output as printed with Serial.print() etc.
This app does not compile your scetches to hex files for flashing. You can use ArduinoDroid to compile your sketches.