Lip-meter is a Blender add-on designed for creating lip-sync animations and configuring facial expressions. It allows users to generate shape keys across pose, edit, and sculpt modes, and automatically sets up custom controllers to drive these morphs. The tool includes a meter to display the degree of applied shape keys and supports adding new controllers for custom facial expressions.

The interface features text visualization for quick controller identification, and the controllers are resizable and movable to reduce viewport clutter. It also includes functional tools to transfer lip-sync animation data between different characters. The add-on integrates directly with Blender's asset shelf, functioning as a lip-sync library with updating pose thumbnails for animation workflows.