There Are More Than 7500 Types of Apple

There are over 7,500 varieties of apples grown in the world. Each can vary wildly in size – from a small cherry to the size of a large grapefruit.
The Guinness Book of Records states that the heaviest apple weighed 1.849 kg (4 lb 1 oz) and was grown and picked by Chisato Iwasaki at his apple farm in Japan in 2005.

From Glamour Magazine