Which reminds me -- just got a new cell phone and went through the old to see what apps I needed to install on the new one. One of them is LeafSnap. Take a pic of a leaf or end of branch with multiple leaves and it will tell you what the plant is. I only ever used it once to check it out. I think I took a pic of a hickory leaf. I'll have to try it out some more and when I installed it, I see there are a bunch of apps that do the same.
Opened LeafSnap and tried to use it and then uninstalled it. Used to be decent but now does everything it can to get you to upgrade to paid. Makes it nearly unusable.