The McRib made its seasonal return at participating McDonald’s restaurants, and this year it’s easier to find with your smartphone.

McDonald’s launched an iMessage app called McDonald’s McRib Finder.

It’s free, and it uses the smartphone’s GPS to find the nearest McDonald’s selling McRib sandwiches. It also allows users to share that location with friends.

The McRib is a boneless barbecue park sandwich that typically attracts fanfare when it returns for a limited time.

McDonald’s allows individual franchises to decide whether to offer the sandwich, but not all of them do.