Can't ID some common bedding plants – Garden Answers Plant Id Review

As an experienced gardener with a degree in botany, I thought this would be helpful when I'm out and about. So I tried it on the bedding plants on my porch to test it. While it did offer the correct item in 6 of 9 trials, only one of them was the top hit (purple spoonbill osteospermum). It completely failed on a plain red snapdragon, and a black single petunia. There was also no option to input a leaf for a non-flowering plant, such as ferns, or something grown for their leaves such as coleus. I tried my angel-wing begonia and got no results with a leaf (I did try the flower also, since it has a few at this time). Items tested also include pink semi-cactus dahlia, single yellow gerber daisy, double purple calibrachoa, double purple petunia, and purple lobelia. Since this app has failed at common bedding plants that I have no trouble with, I can't see how it would be useful to me when I see something unusual in someones yard and want to know what it is on the spot.
Review by Mmmnnnnggdgdgdfsuekcncb on Garden Answers Plant Id.