[Zubersoft]

I have changes coming for this in version 5.0.0. You will be able to use an external SD card, but there are certain restrictions. Files can be read from anywhere on the external SD card, but files can only be written to an application specific directory for MobileSheets. The "Set Removable Storage Location" dialog has changes so that it can automatically populate the right directory for the external SD card when running KitKat.

Mike