Receive reading from arduino over bluetooth and display in Phone

how to receive readings from arduino(sensors) over bluetooth and display in android smartphone?
please suggest me the app and the sketch

Any app in the store will suffice. The code you use to send data to serial monitor can be used to send the same data via bluetooth. You might find the following background notes useful

http://homepages.ihug.com.au/~npyner/Arduino/GUIDE_2BT.pdf http://homepages.ihug.com.au/~npyner/Arduino/BT_2_WAY.ino