It would be great to view your powercurve on my zwift. So being able to see your best efforts for differing durations on the website rather than just at the end of a ride.
If you upload your rides to Strava you can see all this info and more. Strava is free by the way, but if you go premium you get 2 free months of Zwift every 12 months.
Unfortunately it’s not a free feature on strava, the power curve is a premium feature on their website. It was a free feature on trainer road and was an excellent training tool.
Use GoldenCheetah it’s free.