Well, it gets easy ones pretty well - misidentified arabica coffee as robusta but did at least get "coffee", and identified a mango tree - but tricky ones (the various weed trees on our farm) are even more hopeless than my own efforts.
To be fair, it's probably for houseplants more than anything. On the other hand, half the stuff growing on a tropical farm is houseplants.
Wish there were more information about their model.