Watchapp part of the Notification center for Pebble
Phone counterpart (with issue tracker): https://github.com/matejdro/PebbleNotificationCenter-Android
Appstore entry: https://apps.getpebble.com/en_US/application/531c8f3646b8f200dd00018d
Discussion forums: https://plus.google.com/communities/116982109550451242571