BluetoothSerial

The app come from :https://play.google.com/store/apps/details?id=com.blueserial
Please attention:http://www.smartarduino.com/
Bluetooth Serial is an open source app for connecting an Android device to a serial bluetooth enabled device such as Arduino and other devices. It has been tested extensively to work with the JY-MCU module and should work for a wide range of devices.

The entire source code is available for download under MIT License (http://opensource.org/licenses/MIT) at:

https://github.com/plastygrove/BlueSerial

If you have any comments or issues, please feel free to mail me directly. I'm also reachable on the Arduino forum at the following Thread:

http://forum.arduino.cc/index.php?topic=172345.0