Stryd has various apps that work on the Garmin watch. Some Stryders are still looking for additional data fields, more flexibility or training plans on the watch.
Stryders interested in having more power data fields (such as average, instant, lap average, etc) should look into PowerDashBoard.
PowerCenter training plans can currently not be loaded onto the Garmin watches. For folks interested in having power based training plans on the watch, should look into TrainingPeaks.
If you need additional assistance, contact firstname.lastname@example.org.