Check out "PictureThis - Plant Identification" app for Android. iPhone version probably available.

Tried it on herbs, grass, flowers, bark, and my thumb. Got them all correct except my thumb.

Unless I have been mislead about my thumb.

That might explain why it is brown instead of green. I haven't been watering it enough.

https://play.google.com/store/apps/details?id=cn.danatech.xingseus