Tech Check: Phone vs. Fitness Tracker

Good Morning America—May 2, 2016

Good Morning America's Becky Worley investigates whether fitness wearables or smartphones are more accurate in regard to distance, steps and calories burned. To test the different fitness trackers and phones, Becky visited Hospital for Special Surgery's Tisch Sports Performance Center where exercise physiologist Polly de Mille, RN, MA, RCEP, CSCS, USAT, measured the distance and calories burned using metabolic testing to gauge the accuracy of the fitness trackers.

"If you have your phone with you all the time there is no reason not to use it. It's useful, handy and, looks like, pretty accurate," said de Mille.

To watch the full segment, visit


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