HealthyOut - It can be difficult to know the healthier choices when eating out. This app lets you search through many restaurant menus by type like heart healthy, gluten free etc. It will show the nutrition info for many restaurant meals.
MyFitnessPal - I recommend MyFitnessPal for any of my clients who are looking to lose weight. It is an easy way to keep a food journal and calculates how many calories you are taking in. It also will tell you how many calories you need daily to stay at your weight or to lose weight. Track your exercise here too! You can even link it to your Fitbit.
Fooducate - New to reading food labels? This app lets you scan packaged foods and gives them a letter grade. You will get nutritional information about the item broken down into the good and bad. Their website also has great information.
Healthy Habits - Starting something new and getting it to become a habit is hard! There are a few apps out there where you can select your new habit (i.e. drinking more water, eating more vegetables, exercising, getting more sleep) and track the activity in the app. You can then look at your progress, get reminders and motivation to continue. I have not personally used this particular app but I love the idea!
What are your favorite apps for health and fitness?