I have since picked up an OBD11 and the stuff that is classed as FOD does not work and going by the OBD forum not a single person has managed to get them to work.
However the lane assist which I find terrible on the A3 I have managed to switch to memory so it does not come on whenever you re-start the car. The only other app I managed to get to work was needle sweep, had no luck with any of the other apps I fancied although some I would not have installed anyway.
I have however had a lot more success with the wifes golf 8.
Installed some extra dash displays (GTI AND R version), Lane departure memory (like A3), Fuel required to fill tank, windows drop from key lock/unlock buttons, audible confirmation on lock/unlock and maps on both MMI and dash at same time.