I was recently working on a project the involes Bluetooth. While I was trying to debug, I was having a hard time trying to find a good app for sending signals to a Bluetooth device.
After a while I found these three:
All three of these apps work in the form of terminals and they are truly simple. The single button for connecting to a certain device makes the connection process no longer a struggle. A terminal like interface allows for the record of all the communcation between the Bluetooth/Serial devices. The macros makes certain text fast to send.