The one-sentence version
SwingVantage looks at your motion, finds the single thing most worth fixing, gives you a short plan to fix it, and then helps you retest to see if it worked.
That is the whole loop: one fix, one plan, one retest. Everything in the product exists to move you around that loop faster and more honestly.
What it is not
It is not a replacement for a coach. A good coach sees feel, effort, and context a camera cannot. SwingVantage is the tool that tells you what to work on between sessions so you arrive further along.
It is also not a magic grader. When the data is thin or the video is unclear, the app tells you so instead of inventing a confident-sounding answer.