Buying an app on iTunes called iPhorest creates both a new virtual tree and the planting of a new tree. Here's how the app works.
You dig a hole by creating a digging motion until your seedling appears
Plant the seedling
Shake your phone to create a storm and when the sun comes your tree begins to grow
Repeating this will allow your tree to reach full growth
Share your tree growth at any stage with others by pressing the share button to email them a picture
Go up to Forest, where you can reset your growth.
Go up to see all of the other iPhorest users. Help green the Earth - the app places a dot where you first launch iPhorest.
The iPhorest website says that for each virtual tree planted, The Conservation Fund will plant a native tree in real life - starting with restoration of vulnerable wildlife habitats along the Gulf Coast in the United States. The app costs $4.99 and can be found here on iTunes.
The iPhorest app was created by iPhactory, a San Francisco based marketer of applications for phones.