I like it. Just connect to OBD. I have an Android head unit. It shows really nice. I like it. The app I'm using isn't the best. I think I'll try another app. But I like knowing what's going on with my car. This gives you the average mpg. fuel consumption. How many miles to empty. How much money did I spend on fuel. You can indicate how much you paid for the fuel. How many gallons. And it will graph it and show you all your stats on the screen. great, i like that