Unlike desktop screens, mobile devices can be moved around freely. This allows us to create different experiences when exploring 3D data and virtual environments on such handhelds. Yet, this additional degree of freedom not only introduces exciting new possibilities, but also potential issues when used in actual applications. We present a demo environment that enables users to explore different kinds of 3D visualizations on smartphones and tablets, experiment with various characteristics and implementation options, and experience the advantages and disadvantages of these different realizations.