Jason Gullickson from Wisconsin developed a small app for the Pebble smartwatch that enables you to monitor your 3d printer remotely via Octoprint API.
Get it at:
Octowatch 2 is inspired by original Octowatch but it was completely developed from beginning and re-written. The developer is Dominik Scholz.
Future of both apps is uncertain since Fitbit bought Pebble and basically destroyed the functionality of entire Pebble line with no future device coming out.