Just starting out on the 80/20 plan for a marathon, and I’m looking for an app that will show the 7 zones used in the 80/20 plan so I know I’m in the right zone, I tend to forget the zone I’m meant to be in while in the “zone” during a run so a wee prompt would be helpful.
Last I heard, iSmoothRun was compatible with the Apple Watch. I used this before I had my Garmin and it was great. Except I didn’t have a watch and just carried my phone on every run. Since you have the Apple Watch, I think this would be worth a try. You can set your zones with alerts. I hope this helps.