There are plenty of fancy sliders available for mirrorless cameras, camcorders, and other large cameras. MUWI is designed with smartphone users in mind. It is a pocket-sized dolly that lets you capture cinematic footage with your phone. You can attach it to a gimbal for 4-axis motion and target tracking.
The dolly comes with foldable legs and rotational phone holder. It supports a minimum pan radius of 100mm. With TRACK, you can use your MUWI as a simple slider on any tripod. Expected to ship in October. You can find out more here.