Here's how you can download the TerminalBT app free for Android devices.
1. Go to the Google Play page for the free app TerminalBT.
2. Tap the Install button.
Here's a description of TerminalBT:
"A bluetooth ASCII terminal to connect an external Device as Barcode reader, RFiD reader, GPS or another phone using TerminalBT. The data received are displayed to the screen of the phone. Data can be sent to the Device from the phone. Can be connected as Client or Server. "