This guide assumes you want to create an app similar to a "Codecanyon mobile LMS" (buying/selling courses, video streaming, quizzes, and offline sync).
: This tool serves as a powerful retention mechanism, reminding students of upcoming deadlines or new lesson releases.
courses: id, instructor_id, title, price, preview_seconds, total_rating enrollments: user_id, course_id, progress_percent, completed_at lessons: id, course_id, video_url, duration_seconds, is_preview payments: id, user_id, instructor_id, amount, platform_fee, status