The Apple Watch Stryd App can be used for real-time guidance of structured workout execution including haptic and auditory feedback to let you know when an interval is about to begin or end. To enable haptic and auditory feedback, scroll through the settings on the Apple Watch Stryd App and toggle on Power Alerts. Makes sure the Target Tolerance is set to a reasonable value so that you're not receiving feedback too often or too little indicate you are out of range.
The app currently does not offer spoken audio cues with the details of upcoming segments. Only tones are available as general warnings in the latest version. Stryd hope to expand upon this functionality in the future.
If you have additional questions, please check out our other support pages at stryd.com/support or contact us at firstname.lastname@example.org.