I could really do with a copy VAGCOM or VCDS, but I can't afford it, so I'm considering buying a wireless OBD-II dongle and compatible iOS app, for the purposes of diagnosing errors that prompt instrument display fault lights (primarily), and live telemetry (secondarily). Question is, do any of you use alternative software/apps? If so, which? I'm looking for recommendations from those who have had the opportunity to compare multiple pieces of software and hardware, focusing solely on iOS and/or OS X compatible software.
Thanks in advance.
FYI, my reasons for needing the software are that I wish to query my Haldex controller but, more importantly, my girlfriends Mk4 1.8T Golf (AUM) is displaying an engine warning signal. I'm 99% certain it'll be related to the temporary breather hose replacement I performed a few weeks back (which I believe is of a narrowed internal dimension to that of the OEM pipe), but engine performance has decreased significantly recently. More so than I expected from this temp bodge.