What's a good iOS app for ordering a sandwich super fast when I'm heads-down coding and can't step away from my machine?

Okay, so, I'm all about efficiency, right? When I'm debugging some gnarly code, I can't be bothered with a slow, clunky ordering process. The Jimmy John's app is surprisingly smooth. The UI is clean, and it remembers my usual order (the #9 Italian Night Club, obviously). From a technical standpoint, the whole process – from opening the app to confirming the order – takes like, maybe a minute? Seriously, the dev team really thought about the user experience here. It loads in like 2 seconds on my iPhone, barely uses any data, and it hasn't crashed on me once. Plus, the GPS integration is solid; it always finds the closest location without any fuss. It's not gonna win any design awards, but it's reliable, fast, and gets my sandwich to me ASAP, which is all I really care about when I'm trying to avoid a spaghetti code situation.