Bluetooth + Arduino Connectivity

/*
 *  The program for ON/ Off LED Using Bluetooth
 *  MAC+tech Development
 *  http://macplustechnology.blogspot.in/
 *  Email: macplustech@gmail.com
 *
 */
char data = 0;                //Variable for storing Bluetooth incoming data
void setup()
{
  Serial.begin(9600);      
  pinMode(13, OUTPUT);        //output pin (+5V)  other connect (GND)
}
void loop()
{
  if(Serial.available() > 0)  // resive data
  {
    data = Serial.read();      //Read the incoming data
    Serial.print(data);        //Print ValueSerial monitor
    Serial.print("\n MAC+tech");      
    if(data == '1')            //Checks whether value of data is equal to 1
      digitalWrite(13, HIGH);  //If value is 1 then LED turns ON
    else if(data == '0')       //Checks whether value of data is equal to 0
      digitalWrite(13, LOW);   //If value is 0 then LED turns OFF
  }                          

}              


load to Arduino And Send data though Android App. where make simple android app. to send data though Bluetooth .....