Nutritionix Track is a fitness tracking app that simplifies the process of keeping up with your food log. Developed and maintained by a team of registered dietitians, the app's mission is to make fitness tracking a daily habit and help users work towards their health goals. With features like predictive search, state-of-the-art natural language processing technology, and instant barcode scanning, users can log all of their foods in as little as 60 seconds per day.

The app allows users to track their food intake, nutrient totals, exercise, weight and weight progress, calorie and macro goals, and water intake. The Nutritionix database offers over 800K unique foods, coverage of 95% of grocery items in the US and Canada, 760+ US restaurant chain menus, and thousands of common food recipes created by the in-house team of dietitians. The app also allows users to create custom recipes and food items with an advanced recipe creation tool and custom foods tool.

Users can upgrade to Track Pro to access the Coach Portal and share their Track food log with their dietitian, trainer, or other 'coach'. Subscription prices start at $5.99 USD/month for the monthly subscription and $29 USD/year for the annual subscription. The app also offers a 2-month free trial for premium features. If users choose to purchase Track Pro, payment will be charged to their iTunes account, and their account will be charged for renewal within 24-hours prior to the end of the 2-month trial period. Auto-renewal may be turned off at any time by going to settings in the iTunes store after purchase.

Overall, Nutritionix Track is a user-friendly fitness tracking app that offers a wide range of features to help users work towards their health goals. With its simplicity and efficiency, users can easily log their food intake and track their progress. The app's database offers a vast selection of foods and recipes, and users can also create custom recipes and food items. Upgrading to Track Pro allows users to share their food log with their coach and access additional features.