Fans of Kitware can check out their latest application, a small entry into the mobile iPad space, with KiwiViewer.

KiwiViewer is a free, interactive application for exploration of geometric datasets on multi-touch mobile devices. Kiwi currently supports STL, OBJ, and VTK/VTP surface geometry files. Datasets may be loaded into Kiwi from email attachments or from DropBox.

The app is fairly limited: No more than 65k vertices, and apparently no use of Color.  However, keep in mind that this is Version 0.0.1 and is guaranteed to only get better from here!

via KiwiViewer.