Hello all, I'm brand new to C# and Cocoa Touch, but have some C++ and VB experience from years back. I've started delving into the iPhone SDK and I'm having trouble with a simple project: I want to develop a basic app for unit conversion. I'd like it to have a single view with the following UI elements: NavBar w/done button to perform calculation Double Picker ("from" column and "to" column listing units) Tab Bar w/categories such as distance, mass, volume, etc. which when tapped will alter the arrays displayed in the picker view Text field to enter numerical value Label to display result Is it possible to do the above with a single view? From everything I'm reading, Tab Bars are intended to be used with multiple views... But in my case that seems unnecessary, since the only thing that would change between views is the contents of the pickers. If anyone could offer suggestions on what angle I should take structurally to tackle this project (i.e., a nudge in the right direction) I would greatly appreciate it.