title: GPS or ACCELEROMETER which is better to calculate the racing track?
body: <p>I want to develop an app for joggers to calculate there distance and speed .</p>
  
  <p>Through searches I came to know that there are two things gps or accelerometer and accelerometers are cheaper than GPS to use. </p>
  
  <p>I am new in android so how can I proceed ?</p>