Originally Posted by GeorgeBMac

MyNetDiary does let you adjust the ratios of carbs, protein and fats -- but frankly I have not had good luck with it. But I didn't work with it much because I was more interested in my actual intake than comparing it to a plan or budget.

It also has fairly extensive Diabetic features... According to its instructions:
"Tracking Blood Glucose:
Available in the special "diabetes Tracking App" adding tracking of blood glucose, insulin, medications, and many other parameters. It also provides special charts and reports important for people interested in tracking carbs and managing diabetes and pre-diabetes.
If you are a MyNetDiary Maximum subscriber, diabetes tracking is already included ...."

Originally Posted by jsk

You can adjust macro-nutrient ratios and other things (sugar, fiber, etc) on MyFitnessPal if you use the "custom" option for setting your goal rather than the "guided" option.