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