When I use the iPhone Zwift app, climbs are incredibly harder than with the Apple TV 4 app. (Cycleops Hammer trainer).
With the iPhone app, Especially the steeper climbs of 10% grade or higher, I cannot stay seated; even in my lowest gearing. Standing is required, else my cadence might drop to zero against the resistance. Going to my big chainring can just about bring me to a halt. (By the way, this is more like actual 20 to 25 percent grades in real life)
But using the Apple TV app, I can spin up the 15% grades seated.
Why is there a difference. Could it be that I have one or the other set up improperly (if there is a separate setup for each)?
Ken in Dallas