From what I can gather, Watch Apps can’t sync between Watch ↔ iPhone. (cos I was thinking how to have things like elapsed workout time to be in-sync between watch and phone when both are running.
I did find a “mirror watch to phone” capability, but that’s mirroring and that basically needs a full (independent of phone) Watch App and the same app is not running on the phone.
The watch app above is a “companion app”, much like how the iphone can function as a companion app for Zwift on the Laptop. I guess it could also be coded such that one can Pause/Start/Resume/Skip Interval from the watch and then the command would get relayed to the phone.
It’s not a full fledged bicycle computer, for that, you would need a Full Watch App (independent of phone).
I saw from youtube that there is already the App “WorkOutDoors” and “CycleMeter” (I was using Cyclemeter exclusively for a couple years before giving up - due to battery life)
@Grip for the HeartCast app, do you notice any delay between the watch HR and the HR shown on the watch?
Looks like there is a (v slight) delay. Acceptable?