A YouTube clone web app that allows users to upload, share, and watch videos similar to the popular video sharing website YouTube. The app typically includes features such as a user-friendly interface for browsing and watching videos, the ability to like, save, and share videos, and the ability for users to create and manage their own channels. The app also include search functionality, and the ability to write comment to other users' videos. Overall, a YouTube clone web app is a platform for users to discover and enjoy a wide variety of video content, as well as share their own creations with the world.