Pretty good APP. Takes some tweaking to get it to see your plant material correctly so just play around with adjustments until you feel it is close. We can't use it for some varieties or species but it seems to be working on most. Also, works best with a tablet. We use a Galaxy Tab A with 8 megapixel camera. Easier than a druid Turbo with higher resolution just because of the screen size. Also, it works offline so you can get an inexpensive tablet & connect to write later to transfer data. Overall, I recommend it.