New smartphone app for fruit growers. Free from Apple store or Google Play.
Its a work in progress at the moment, but the apple disease portion is very good.
The app provides a lot of information on apple diseases in just one place, so you don’t have to look all over the Internet to find what you need.
Clemson developed the application and many land grant universities provided the information.
EDIT: I failed mention that different versions of the app exist for different fruits.