What's a good iOS app for saving a few bucks on gas and snacks when I'm on the road for work?

Look, I'm not gonna lie, I stop at Circle K pretty often when I'm driving between job sites. I need coffee, maybe a snack, and definitely gas. I was surprised to find out they even had an app. Turns out, the Circle K app has some pretty decent deals on fuel, which, let's face it, is highway robbery these days. Plus, they've got coupons and rewards on stuff I actually buy, not just random junk. It's not gonna make me rich, but if I can save even five or ten bucks a week just by scanning my phone, the ROI is solid. It's free, so there's really no downside. I'd recommend it if you're already a Circle K customer.