The free package gives you almost nothing, but your coach will see everything you upload. The 3 figures that I watched on the paid-for version were hidden on the free version – which proved utterly useless and annoying as I didn’t fancy stumping up £80 for a twice-a-month check to see if the figures were improving as I felt I was improving. Now using intervals.icu which does give the 3 numbers (and is free) – but I don’t tend to use it for anything other than a gauge to confirm how I’m feeling is proving the same as the results suggest.
TrainingPeaks was really good for getting a session plan from the coach to then download to Garmin and then follow it…the whole process was very easy and smooth.