title: How to determine, whether an iphone app (previous/next version) is existed in our device or not?
body: <ul>
  <li>I Have an app with 2 versions....  <strong>iPaint1</strong> (<em><code>FreeVersion</code></em>) &amp; <strong>iPaint2</strong>(<em><code>Paid Version</code></em>)</li>
  </ul>
  
  <p>iPaint 2 has extra features along with the features of iPaint1..</p>
  
  <ul>
  <li>if user have iPaint1 &amp; also if he installed Paint2.</li>
  </ul>
  
  <p>Now we need to display An alert when user launch/uses paint2. Alert will be pop up as </p>
  
  <p><strong><code>"You already have all features of paint1 in this 2nd version, Delete Paint1 to free space"</code></strong> </p>
  
  <p>only if iPain1 is existed in our device, otherwise no need of alert How is it possible.</p>
  
  <p>(I guess we may achieve this this using AppStore ID &amp; Bundle Identifier but not sure and don't know the process)</p>
  
  <p>Thanks in advance</p>
  
  <hr>
  
  <p><strong><em>But It is works on simulator but not in iPod</em></strong></p>
  
  <hr>
  
  <p>Answer :</p>
  
  <p>Finally i Got solution in @MDT 's answer. thank u @MDT and others as well. </p>
  
  <p>Thank you for your quick response.. This link is useful for this question.</p>
  
  <p><a href="https://stackoverflow.com/questions/3878197/is-it-possible-to-get-information-about-all-apps-installed-on-iphone/3878220#3878220">Is it possible to get information about all apps installed on iPhone?</a></p>
  
  <p>and in</p>
  
  <p><a href="http://www.iphonedevsdk.com/forum/iphone-sdk-development/22289-possible-retrieve-these-information.html#post101753" rel="nofollow noreferrer">http://www.iphonedevsdk.com/forum/iphone-sdk-development/22289-possible-retrieve-these-information.html#post101753</a></p>
  
  <p><strong><em>But It is works on simulator but not in iPod</em></strong> any advice pls. </p>