I've got a suggestion for this ... my iPad is often in the sideways orientation with the power button off to the right rather than down, due to the Bluetooth keyboard/case I got for it. Any chance the app could detect the orientation of the iPad? Perhaps a setting to allow rotation in case that orientation does not work for an iPhone?

I'm thinking on the iPad at least, double the columns when it is horizontal. Or display both the Mining and Botany side-by-side when it is horizontal.