Preheat the oven to 350℉ and line a regular-size cupcake tin with standard cupcake liners (2" x 1¼").
In a medium-size bowl, mix the flour, cocoa powder, baking soda, cream of tartar, and salt. Set aside.
In another bowl, mix the maple syrup, applesauce, coconut oil, eggs, and vanilla extract.
Transfer the wet to the dry ingredients and mix thoroughly.
Fill each cupcake liner halfway full and bake for 30 minutes, or until a toothpick inserted into the center of a cupcake comes out clean.
Cool cupcakes completely before frosting.