Given modest goals of the app, the design and interface seem pretty weak
Interface is clumsy -- e.g., if you are in the drop down menu of states and you click on one, it won't come up on the map until you tap the screen first to press "done" to exit the drop down menu (it is not obvious that you need to do so). And what is the purpose of having the separate list of states as opposed to the cylinder list? There is an annoying time lag in getting the identified state to appear on the map. Also, it would be nice to have a way to identify (on the map) the states that immediately surround the state you picked.
This app could be very useful for someone with poor geography sense, but it needs work. Ideally, of course, there would be a way to call up a more detailed map of each state.