Combine wet ingredients with dry ingredients and mix until smooth.
Using a spatula, fold in apple until apples are covered with batter.
Line the bottom of the air fryer basket with a sheet of parchment paper. Lightly spray with coconut oil spray.
Using a small scoop, drop batter into mounds on the parchment paper. (My air fryer fit about 9 fritters so I did this in 2 batches.) Lightly spray the tops of the fritters with coconut oil.
Cook the fritters for 10-12 minutes at 370 degrees.
In a coffee grinder or Vitamix, powder sweetener and salt. Add milk and mix to make the glaze.
Remove fritters from air fryer and when cool to touch, dip each side of fritter in glaze and return to a pan or rack to cool.