CompuQuilter is available for the APQS Longarm Quilting machines utilized with the Millenium, Ultimate 1, Freedom, Discovery and liberty longarm quilting machines. A stitch regulator is not required to run CompuQuilter. If your machine has a stitch regulator CompuQuilter will not interfere with its operation. You can disengage CompuQuilter using two quick disconnect and turn your Longarm into a free motion machine.