Dip your hand into your wallet and buy
VCDS, it's the best you will find. Not cheap I will admit but if you, your family and friends are VAG owners it will pay for itself.
There are lifetime updates and support available FOC to registered users plus a forum of expert users to fall back on.
Provided your vehicle is a VAG group product and has an OBD2 port VCDS is compatible, I've owned VCDS for years now and have recently updated the interface to the latest version despite being no expert at using it it has saved me and friends £s over the years.