Hello fellow Prius V owners. Live in San Diego and just transitioned from a '99 Ford Expedition to a Prius V. I no longer feel that stabbing pain every time I fill up and see another $80-100 go in the tank. I wanted to poll the group and see what type of phone apps are being used to track your mileage. I have the free version of Gas Cubby and so far I am pleased. It keeps track of all the basic stats like gallons, total cost, MPG, etc. Keeps the cumulative cost avg MPG as well. Its interesting to see the difference between what the car is saying and what the app comes up with for avg MPG based on your distance traveled and actual amount you filled up. It tends to be around 2-3 miles less then what the car reports for the trip. Any other owners out there with different phone apps?