Nutritionix Track is described as 'Online calorie tracking website and world's largest curated nutrition database, includes web site and mobile applications' and is a Calorie Tracker in the sport & health category. There are more than 100 alternatives to Nutritionix Track for a variety of platforms, including iPhone, Android, iPad, Web-based and Android Tablet apps. The best Nutritionix Track alternative is Open Food Facts, which is both free and Open Source. Other great apps like Nutritionix Track are OpenNutriTracker, FoodYou, MyFitnessPal and Alma Nutrition.