This is the best fuel savings app I have found. I've been using it for a year and it's been flawless. If you turn people on to the program you benefit a little every time they use gas also. My discount has been from 5 cents to 30 cents per gallon off usually in the twenties. If you use my code you get an additional discount.
My code HZSTM gets you a 15c/gal bonus. https://upside.app.link/isHCP82iFbb