Free too. You can do a lot with just your power curve.
Came back from a ride tonight and happy to see 2 new (beta) features for Premium users. The first is weather for the next 7 days, here is the forecast for my ride tomorrow:
web only right now, its in beta. Think I’ll continue riding in the afternoon!
And the other is ranking against other TrainingPeaks users, only in TP mobile:
thats against my 5 year age bracket, and my “un-optimized” weight LOL. I need to move and find some masters 60+ races because the guys my age racing around here have been riding forever. Its like going for a ride and getting a Strava KOM you didn’t know about, and then looking and you are #1 out of 112 
I need to race in an area like that 
TP sent me 2 or 3 surveys earlier this year and I basically said “your UX is old and stale, like the dawn of the Internet in 1995, not as bad as SAP but you seriously need to make it like Intervals” (not kidding).
I’ll take those features, especially the weather.