While there is plenty of useful information assembled here, the apps actual main focus, namely to identify a tree, doesnt work very well. Each time you have to fill out a long questionnaire about leaf and fruit characteristics, but often you get no results if your input does not match perfectly. So thats a little frustrating. If you dont have a fruit, for example, or you mislabel one characteristic you should still be able to get some sort of approximation.
Chdine about Tree ID - TreeID with Fall Foliage, v2.6