No you don’t. However, many users find it useful to also have a ReadCube account to get a better reading experience and organize publications and references. Within Dimensions, the full text PDF for some publications is visualized in the ReadCube viewer, which is an enhanced PDF including hyperlinks, supplements, article metrics, and much more. However, having a ReadCube account gives you the additionally ability to save, organise and read these full text publications as well as references across multiple devices, receive custom recommendations of articles you may be interested in reading, manage and add citations into your manuscript, see article metrics, and much more. For more information on what ReadCube has to offer, please go to