How to build a fitness tracker with your iPhone 7, iPhone 7 Plus, and iPhone X

The iPhone 7 and iPhone 7 plus feature new, optional gyms, which allow users to track workouts using their phones and track how many calories they burn.If you're looking for a fitness tracking app, the apps below might be the best.Fitness Trackers Apple Health and Fitbit The iPhone and iPad versions of these two apps have built-in GPS for easy

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