It sounds like your iPad could have its orientation locked. To change this, move the switch on the side of your iPad near the volume control buttons. You should then be able to rotate the iPad to view content in portrait and landscape views. There is more information about the orientation lock at Apple Support here: http://support.apple.com/kb/HT4085
I hope this helps. If that doesn't solve your problem, please email us at firstname.lastname@example.org or you can also contact us directly through the Help tab within the MiNDFOOD application, as we are the developer of the application.