Keet, a Y Combinator company out of the summer 2024 batch, has posted its launch on Hacker News. The product is a mobile app that builds a course on a topic you name, assembling short explainer videos and games into something closer to a curriculum than a playlist of clips.
Structure is the pitch rather than the content itself. Every generated course comes with a roadmap divided into modules and lessons, designed so material arrives in ordered, bite-sized pieces and accumulates into an actual understanding of the subject. The example the company shows runs a mathematics track from abstract set theory through topological spaces and on to connectedness, compactness and Hausdorff spaces — each module broken into three or four individual lessons.
Each lesson pairs teaching with testing. Explainer videos carry the instruction, and a set of games follows to check whether any of it landed. The comparison the company reaches for is Duolingo, and the loop is recognisably the same one: short input, immediate exercise, move on.
Courses are configurable at the point of generation. You can set how deep the treatment goes, how complex the material gets, and what narration style it uses — which matters for a system that is otherwise generating everything itself.
Access is restricted for now. Keet is in private beta, with a waitlist attached to the app download, and the company says it is letting people in as capacity allows. Signing up brings two courses at no charge; generating anything beyond that requires buying credits.
