Carb Counting With Lenny and WaveSense Diabetes Manager are apps that help individuals with diabetes track their carbs. Both apps are iOS-only as of 2015.
Carb Counting With Lenny is a kid-friendly free app that helps diabetic children learn more about carbohydrates and gain a sense of control over their disease. Parents and caregivers can use this app to plan meals.
WaveSense Diabetes Manager is a free app that tracks carbohydrate, glucose and insulin intake. This app converts data entered by the user into informative graphs, charts and logs. The app also contains educational videos that explain healthy choices, lifestyles and foods, as well as share experiences of other people living with diabetes.