The comparison, plainly.
Free membership includes:
Unlimited recording, uploading and analysis of your sessions.
Your topline ACR, live and updating with every session.
One professional play-in review, on video, drawn on your own footage.
Mentor threads, with one to two mentor replies per session.
Unlimited threads with training partners and the community.
Full membership adds:
Your complete six-dimension shape, un-ghosted.
Drill-down through each dimension to the shot types and clips behind it.
Unlimited professional reviews.
Unlimited mentor replies.
The leaderboard.
Billing is monthly or annual, through the App Store on iOS or Stripe on the web. You can change plan or cancel at any time; Managing your account shows you where. Whatever you choose, your sessions, your history and your rating stay intact, and everything free stays free.
Full membership is for the moment you want both halves in full: the complete measurement, and unlimited access to the people who can act on it.