This android app was mentioned in
with an average of
shell gas has always been a better quality gas so i've read. Who really knows? Oddly though, more shell stations are now popping up, so prices should be coming down. Do yourself a favor and get the gasbuddy app to find the best deals. I got shell gas 3.19 premium the other day in east meadow & the other in rvc when the one in wantagh is like 3.65
gasbuddy @ play
gassbuddy @ itunes
I know google maps has a feature that if you set a destination and drive; it will show gas prices along the road you are driving on. I liked that I didn't have to figure out if I should stop here, or keep driving and hope for a better deal. It pretty much said "next stop has this price, and the stop after that has this price".
Gas Buddy is a good app to have in general to find the nearest, cheapest gas station. The android app doesn't have this feature but their easy to use(even on a phone) website has a feature where you can tell it where you are and where you want to go and tell it your car's gas mileage and it will plot out every single gas stop you'll need to make. I've used it to map out a trip from Oklahoma to Las Vegas and back. Worked way better than I expected.
And they have apps for both iOS and Android.