Journalist and author A. J. Jacobs road tested hundreds of health apps to separate the solutions from the snake oil. Get his recommendations for the best apps to help you destress, stick to your diet and finally start exercising.

View Part 2 of Health Apps That Work.

Learn more about these health apps.

Want to know how to look marvelous without splurging so much? Dr. Oz invites three beauty experts to share the smartest ways to save money while looking fabulous starting from your hair and makeup tools to the beauty products you use.