Originally Posted by firebird854

I have a M2, one classy thing is it gives cadence, power, and speed, not just power (Saris/PowerTap/Cycleops patented a cool power spike = cadence algorithm).

Also no, you do not need to purchase any type of rouvey subscription to calibrate. There is a phone and computer app for Rovey, you can use it for spin down calibrations, a 1 hour free ride, and firmware updates without subscribing.

I use my cycleops magnus (or M2 as you called it) with Trainerroad, Zwift, and occasionally, Xert.

I normally powermatch mine to a G3 powertap hub power meter perfectly fine as well.