This is a tester application in order to connect to OBD-II dongle via Bluetooth and get response. Since STN1110 commands are compatible with ELM327, you are able to use this application to make sure ...

ExpressOBD may also be of use to owners of "knockoff" ELM327 devices (ebay, Aliexpress) that do not trust the provided software. Note that drivers are still required to interface with the hardware.

You can do some neat stuff to the way your Ford Focus Mk2 works ... He hit eBay and bought an ELM327 cable which plugs into the On-Board Diagnostics port (ODBII). There are two different ways ...