TubeWizz vs Thumby, feature by feature
Thumby does one thing, thumbnails, in more depth than most general SEO platforms. TubeWizz trades some of that specialist depth for a full metadata and tracking workflow around the thumbnail.
A thumbnail is only half the metadata problem
Thumby produces strong thumbnails, but a click still depends on the title next to it, and neither tool tells you how your video is ranking once it is live. TubeWizz generates the thumbnail alongside the title, description, and tags in a single SEO Wizard run, then tracks how the whole package performs.
Choose TubeWizz if you want a full metadata workflow. Consider Thumby if thumbnails alone are your bottleneck.
Choose TubeWizz if you want thumbnail generation bundled with title, description, tag writing, and competitor tracking. Consider Thumby if thumbnail design specifically, with deep style presets and channel cloning, is your main bottleneck and you are comfortable buying credit packs without a subscription.