MMWormhole is great.

I have not posted anything in a while, but wanted to just link out to a really cool open source tool for working with Watchkit.  It is called MMWormhole and it let’s you send data from your watchkit extension over to the parent app and back again.  The really cool thing is it is setup for notifications.  Your app is listening for the data and can act upon it when the data is received.  This is really helpful with iOS7.  Great work Mutual Mobile.