New code alert! To celebrate the milestone of $100 million saved by GetUpside users, the company has released promo code 100MIL, which gives app users an additional $.10 off per gallon.

The great thing about 100MIL, like many other promo codes, is that it can be used by existing users and combined with other promotions to maximize savings.

The app is already the best way to save on gas, so make sure to increase your cash back even further by adding new promo codes as they are released.

To add a code, tap Menu, then Profile, then Promo code in the app.