Watch Face complications are features on a watch face, which shows specific information in addition to displaying current time.
Watch Face application creates and draws the complication on the watch face. And complication provider application provides the data for the complication.
You can use the following watch face complication and complication provider features in your native applications:
You can create the complication to support the watch face complications on your watch face application.
You can provide the data for complication. If the watch face application requests to update the data, complication provider must give the updated data. In addition, if the complication data is updated, complication provider can notify to the complication.