I tried it out around the yard and it correctly identified a variety of native flowering plants (in and past their prime), a couple trees (one native to the region, one about 400 miles from its native range), and a few ferns. The only one I'm pretty certain it got wrong was misidentifying a ghost fern as a Japanese painted fern (I have both, they are rather easily distinguished). When I tried to suggest that the misidentified fern was a ghost fern, it was unknown to the app so I couldn't suggest it.