title: Google Distance Matrix API free limitations
body: <p>I'm writing a mobile app and considering using Distance Matrix API to get the driving distance from A -> B. Google writes the following under <a href="https://developers.google.com/maps/documentation/distancematrix/#Limits" rel="nofollow">Usage Limits</a>:</p>
  
  <pre><code>Users of the free API:
      100 elements per query.
      100 elements per 10 seconds.
      2,500 elements per 24 hour period.
  </code></pre>
  
  <p>Are these 2,500 elements <strong>per phone</strong> or do <strong>all phones</strong> with my app share the same 2500 element limit?</p>