We use your phone’s GPS and motion sensors to detect your motion and measure your distance. For the Outdoor Walk, Run & Bike modes, we use your phone’s GPS, which is usually the most accurate in measuring distance. For the Indoor Walk and Run modes, we use your phone’s accelerometer to register activity, which gives an approximation of your distance and is slightly less accurate.
If you are experiencing consistent and large discrepancies, please let us know. Simply click Contact Us in the top right-hand corner of the Help section or email: email@example.com.