If you fly an Avidyne-equipped Cirrus SR20 or SR22 you almost certainly rely on the MFD to display detailed engine data. The MFD does that job quite well, but the hardware and software was designed over 15 years ago and hasn't changed in that time. The hardware is becoming more expensive to maintain and there is no prospect of any software upgrade in the future.
The BlueMAX adapter enables you to access the same engine data as the MFD uses but stream it wirelessly via Bluetooth to a portable device such as a phone or tablet allowing easier and more versatile ways to view the data.
This is the Android app that connects to BlueMAX and displays and logs the data. It requires installation of a BlueMAX hardware adapter, which can be ordered from the Control-J website - www.control-j.com.