If the output to the bluetooth module is viewed on the computer it is not human readable - the packets need to be decoded. Instead you will see similar to below:
If you want to view the output on a computer there is a python script to do that at https://github.com/eChook/Python-Serial-Interpreter. This requires Python 3.x with pySerial and tkinter modules installed.
The interpretation code used in the Android app is available here.