FindATree can help you identify many common trees in North America (mainly focusing on areas east of the Rocky Mountains). You will be asked to choose among descriptions of the tree, its leaves, or its bark, until you have given enough information for the tree to be identified. A picture of every tree is included!
The app does not require internet access, and can be used on both phones and tablets.
Data based on the book "Tree Finder" by May Theilgaard Watts.