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VTube Studio is the default answer when someone asks which app moves a Live2D avatar with your face. You load a .model3.json, point a webcam or phone at your face, and the app sends a tracked image you can capture in OBS Studio.
Why beginners pick it
Setup is faster than rigging from scratch. Most free VTuber models ship with VTube Studio instructions. Pair it with our best VTuber software roundup for mic, OBS, and lighting order.
Limits
It does not replace Live2D Cubism if you are authoring art. It also will not rig a model — see VTuber rigging for that pipeline.