I don't think it's VIN specific as it does all of Fiats range, be careful with it, you can seriously fuck shit up. I paid 40 bucks I think a few years back, installe dit on my phone and tablet, so it must be account specific. I used it to program a new key too.
There's some great options in there under the Body Control Menu where you can turn off the DRL dropout, keep fogs on with high beam, shut the seatbelt alarm off which is great offroad etc. Just don't change the make of car or model, haha, I've read that changes a whole host of things, although they were pretty happy it changed the logo on their dash