title: How event "first_open" in firebase analytic count?
body: <p>In my firebase analytic event &quot;first_open&quot; shows 489 download till 7th july but in play store stats it shows 347 download till 7th july, i don't know why these no. is differ.</p>
  <p>Definition of first_open is:-</p>
  <blockquote>
  <p>When a user opens the app for the first time.</p>
  <p>This event is not triggered when a user downloads the app onto a device, but instead when he or she first uses it. To see raw download numbers, look in Google Play Developer Console or in iTunesConnect.</p>
  </blockquote>
  <p>But when user open my app for first time is 489 then at play store it should also be 489 or more, i don't know why this happen?</p>
  <p>I have doubt if some user downloaded my app and open my app, firebase event first_open count increases by 1 what if a user uninstall and after some time reinstall then is it again increases the first_open of firebase analytic.</p>