title: When can I add In app purchases ? Google Android Play Store
body: <p>Do I have to integrate In app purchase before publishing my app or can I do it after?</p>
  <p>I want to publish a app on Google play store and make it free to download. And, if it gets some traction, I want to integrate In App Purchases.
  I know that if I make it free for download it can't be reversed, but what about In App Purchases, can they be added later ?</p>