I have no laptop so VAGCOM isn't a great option for me, since you have both tuffty is the liquid gauge a reasonable replacement?
From reading the blurb it would appear that the Liquid Gauge is real time only, hence no posting of logs, and obviously not quite as capable as the VAGCOM, but it seems to be able to provide power, temps, timing etc plus fault codes and I think some alignment functionality hence a lot of what is helpful. Or is it simply no match and VAGCOM plus a laptop borrowed from a mate would be far better (but obviously not in the fun toy stakes)?