vidIQ helps with research and channel growth analytics. ThumbnailTools attacks a narrower problem: which cover and title should win the click without lying to the audience.
Packaging-first workflow
Diagnose → preview at feed size → heatmap check → live A/B. That loop is the product. Everything else is intentionally out of scope.
Complementary use
Use research tools to find topics; use ThumbnailTools so the package earns the impression opportunity those topics generate.