There are so many better ways to walk someone who doesnt have a botany degree in identifying trees. For example how much time could you save by just clicking a button that says "has flowers". An ideal app would allow you to select the parameter you want to begin the search with. starting with zone is very limiting especially since people can pot trees and bring them to other regions. This app is a wonderful visual effort, but totally fall short of the promise to help you identify. I really want my five dollars back.
Carianoff about Arbor Day Tree Identification Guide: What Tree ...