Fantastic app! I use it on my iPod (no cellular needed). So far it's been useful in the Tahoe Sierra, gold country foothills/American River area, and the Sutter Buttes. The keying-out by characteristics works great. No need to select every characteristic. More than one choice per characteristic will often work when it's not clear (e.g. pink or purple flower? The leaf shape?) . Note the dwindling number of ID possibilities as you choose characteristics, and when you get down to one or a few species, look at the excellent photos and line drawings to confirm what you've found. Another approach to ID is to type what you guess might be the common name or family in the search box and look at what pops up. Interesting tidbits about traditional uses, etc. are fun to read. This app has mostly replaced my having to carry field guide books and my pack is lighter. There have been just a few times when the guide let me down, but like I said, I haven't been using it in Yosemite. Totally worthwhile purchase! I wish there were a way to bookmark plants I've previously identified (or even to mark locations by GPS, if one had that capability), but those are just suggestions for future versions.
Show less