For me it makes it easier cuz I do everything from my phone. I do email, music, check line times at Disneyland, order pizza and now I can tune my car with it! I don't see why it's not a sweet idea! Plus for a high end tuner you will be paying that much anyway. The tuner with its own screen is like 800, so to me 400 makes sense cuz I'm supplying my own screen. Also I won't have to plug anything into a computer. They email me the tune, well I have email on my phone so I can upload my tune on the road! It just seems way more convenient.