Seamless changed the way we order food. And now Square wants to change it all over again with Caviar, a premium courier service for restaurant deliveries that's finally going nationwide—and mobile. The Caviar app just came out, and it basically lets you order food from all the restaurants that aren't on Seamless.

This sounds like a great way to welcome winter. Square purchased Caviar a few months ago, when it was still testing in a handful of cities. Now, Caviar is launching a very Seamless-like app and expanding to 15 cities nationwide, including Brooklyn. The app includes a very fun feature that lets you track your food via GPS as its being delivered. It's like the Domino's Pizza Tracker, only useful and more expensive! [Caviar]