Yes, Yurbi's interface is responsively designed. That means that depending on the size of the screen and device you are using, the interface will adjust and change to provide a good experience.
On smart phone devices, users are able to access the Dashboard and Library features of Yurbi. But due to the small screen, you are not able to edit or build reports or do administration features.
On tablets from mini-ipad and up you have the full features of Yurbi available.
For any dashboard or report that is embedded, the arrangement of the dashboard widgets and any charts/grids will adjust to fit into the size available as best possible.