Fitness apps and calorie counters like MyFitnessPal and FitStar pose a challenge to the traditional personal trainer model, but which stands the test of time? Molly Wood tests them out.

Produced by: Molly Wood, Rebekah Fergusson and Vanessa Perez

Read the story here: http://nyti.ms/1Ci52YO

Subscribe to the Times Video newsletter for free and get a handpicked selection of the best videos from The New York Times every week: http://bit.ly/timesvideonewsletter

Subscribe on YouTube: http://bit.ly/U8Ys7n

Watch more videos at: http://nytimes.com/video

---------------------------------------------------------------

Want more from The New York Times?

Twitter: https://twitter.com/nytvideo

Instagram: http://instagram.com/nytvideo

Facebook: https://www.facebook.com/nytimes

Google+: https://plus.google.com/+nytimes

Whether it's reporting on conflicts abroad and political divisions at home, or covering the latest style trends and scientific developments, New York Times video journalists provide a revealing and unforgettable view of the world. It's all the news that's fit to watch. On YouTube.

Workout Test: Fitness Apps Vs. Personal Trainers | Molly Wood | The New York Times
http://www.youtube.com/user/TheNewYorkTimes