What's a proper useful Android app for racking up rewards on snacks and petrol while I'm road-tripping across America?

Honestly, the Speedway app has been an absolute godsend on my US road trips. It's grand for earning points on petrol, snacks, and all the bits and bobs you need when you're constantly on the move. I've been using it from California all the way to Florida, and it works a treat. The rewards system is straightforward, and I've already redeemed points for a few free coffees, which is always a bonus when you're battling jet lag. Plus, it doesn't eat up your roaming data too much, which is always a concern when you're hopping between states. It's definitely sorted me out on more than one occasion when I've needed a quick caffeine fix or a last-minute snack. I'd recommend it to any fellow travel bloggers or anyone just doing a bit of exploring in the States.