No, users do not have to pay to use Knowt, as the platform provides a comprehensive free version that includes essential study tools like flashcards, practice tests, space repetition, and note-taking integrations. Unlike platforms that restrict critical testing modes behind paywalls, Knowt makes its core study ecosystem freely accessible to students. While the company may offer optional premium features or advanced institutional integrations over time, the primary tools required for creating study sets, importing notes, and preparing for examinations remain entirely free for individual users.