I am on the HGC diet. Looked at the HGC apps. They sell for 9.99. This app is .99!! It is so flexible. It gives calorie counts for many foods and also gives you the option to add foods not listed For instance, I have added some meal replacement bars that I use on the run. The app gives you all the nutritional numbers as well. The journal keeps a running total of calories for the day or days or week. You have the option to customize each section. This app adapts to any diet or eating plan. It also tracks water and exercise. It is simply the best. I recommend it highly!