1. TrackPlay: best for VSLs scored on the sale
TrackPlay is the pick if you run paid traffic to a VSL and need every play tied to the actual sale.
Spotlightr can gate a viewer and tag them in your CRM. TrackPlay is a VSL player and analytics platform for paid-traffic funnels: sound-first autoplay and timed CTAs, retention split by buyers and non-buyers, split tests decided by real sales, and the cart-verified sale posted back to Meta, TikTok and GA4. It is narrow by design and is not a general host, so a course library would stay on Spotlightr or another host. It is also very new, with little outside review history and invite-only signup, which is what you would expect of a platform at this stage.