There are minor differences in the nutritional value between the two apple varieties. Green apple is a better source of Vitamin A, Vitamin B, Vitamin C, Vitamin E and Vitamin K compared to its counterpart. In addition, it contains more iron, potassium and protein than the red apple. According to some studies, green apples may be better for people trying to shed pounds. If you are trying to reduce your overall sugar intake, it is better to switch to green apples. Red apples, on the other hand, contain more antioxidants and are tastier.