Classi学習動画 is a free online learning service that enables users to learn through videos and questions. It is an excellent platform for anyone who wants to learn something new or revise their existing knowledge. The application is available on the iPhone platform and is developed by Classi Corp., a company that specializes in providing online learning services.

The application covers over 1,000 units of both video and course materials, ranging from elementary to university entrance exam preparation. The videos are designed to be short, allowing users to learn even in their free time. The learning courses are structured by unit, making it easy to use for daily classroom prep or revision. Additionally, Classi学習動画 offers personalized recommendations based on the user's strengths and weaknesses, making learning more efficient and effective.