What is the difference between apple pie and blue berry pie?

The main difference between apple and blueberry pie is the fruit filling. Apple pie is made with sliced or diced apples, while blueberry pie is made with fresh or frozen blueberries. Both types of pies are typically made with a pastry dough crust, and may include additional ingredients such as sugar, cinnamon, nutmeg, and butter. Apple pie is a classic American dessert, while blueberry pie is more common in the northern United States and Canada.