Circa is a simple app that shows your notifications from Android device on your watch (powered by Android Wear) in beautiful way. You can select one of the available themes (with option to change its appearance) and when notification will come, you will see it in new way on your wearable device! App is free and supports both formats of Android Wear watches - square and round. Circa also allows you to block some apps from sending notifications. Just select "Notification history" in app and then block apps by pressing "more" button on right side.
If you want to support my work, please buy Circa Pro - for now it enables nothing, but in future it will bring more animations and features to Circa.
Circa Pro: https://play.google.com/store/apps/details?id=pl.damianpiwowarski.circa.pro