Professor Goose

The tool takes uploaded content — PDFs, typed notes, syllabus topics — and generates questions designed to surface what you cannot yet explain, not just what you have not read. It fits concept-heavy subjects where understanding chains matter: explain supply curves wrong and the follow-up question will catch it. The free tier runs on a shared usage allowance, so heavy daily sessions can hit a ceiling before a study block is done. There is no API, no self-hosting, and no way to pipe it into a broader study platform — what you see in the browser is what you get.