 upside do you live under a rock billy upside is the hottest cash back app out there it's free to download and you get real cash back for every gallon of gas you buy i use it all the time and i've already made around 200 bucks you can make that kind of cash back just for buying the gas you have to buy anyway yes i'm looking at the upside app now and there's a gas station at the next exit offering 25 cents per gallon cash back okay i'm stopping to download upside and fill up my tank download the free upside app now to earn cash back every time you buy gas use promo code