Hi Carl,
Hatched doesn’t have a native WordPress or LearnDash plugin. It’s an API-based service, so connecting it to a LearnDash site needs custom code on the WordPress side.
The approach is to hook into LearnDash’s action hooks and use those to send events to Hatched’s API. Hooks like learndash_lesson_completed and learndash_course_completed fire at the right moments and give you the data you need. Hatched’s event model maps well to this, and they even use lesson_completed as an example in their evaluation docs. The PHP that bridges the two can live in your child theme’s functions.php or as a small custom plugin (either works), though a custom plugin is cleaner if it’s self-contained. If you’re not comfortable with PHP, that part would need a developer.
The LearnDash developer docs cover the hook reference, and Hatched’s getting started guide walks through the API side.