Keyaki Studio is an iPhone application developed by YUTA UEDA that enables users to produce animations using avatars. The program offers a range of features for creating dance videos and dramas, allowing users to take on the roles of acting, editing, and shooting.

With the ability to capture motion through the camera and mocopi, users can save and manage motion data. Additionally, users can edit avatars by adding facial expressions, hand poses, and lip-syncing to motion data, as well as customize avatars from VRoid Hub. The app also facilitates video production, allowing avatars to co-star using different motion data and enabling group dance creation with background images or videos.