Why don’t you use decimal places for the nutrient values in the books and app?

All values in the books and app are rounded to the nearest gram or calorie. This is accurate enough for most purposes (e.g. diabetes education courses such as DAFNE round carbs to the nearest gram for people on insulin).

Additionally, because foods and recipes vary in their nutritional content, showing values to 1 or 2 decimal places wouldn’t be any more accurate.