5k Run Trainer is a Wear OS Standalone App that helps get back into running. It is based on the C25K model. 
Make sure to enable notification for app settings. 
Features:
Leave your phone at home with this standalone App. 
You can pause, skip or stop workout.  
App works in the background with minimal battery drain.  
User is sent a notification with details and a timer.  Watch vibrates and sends a beep if you are listening to music. Using wrest gestures, you view the notification and continue without having to interrupt your workout. 
For more information visit
https://www.nhs.uk/live-well/exercise/couch-to-5k-week-by-week/