Many different fruit tree identification guides are available. They can be found in print as desktop or pocket field guides, online, and as iPhone apps. Tree identification guides are usually divided by region. These guides help identify trees by their fruit, leaves, flowers, bark or branches.
Apps that function as tree identification guides work by analysing a picture of a leaf of a tree, taken by the user of the iPhone, using the same technology that is used for facial recognition programs. Some websites also accept uploaded pictures of trees or their fruit and leaves so that resident experts can identify them. The best way to find fruit tree guides, websites or apps is to do an online search for the terms.