If you're looking to lose weight, improve your health, or generally keep a closer eye on what you eat each day then try downloading one of these great apps to help you along the way. These are some of the best iPhone apps for nutrition, combining nutritional databases with food tracking, and general educational content to help you more easily figure out what you should and shouldn't be eating to achieve your personal goals. You'll find more than enough information to help you get started on your weight loss journey.