title: Needs to understand about the how to implement auto renewable subscription for my app
body: <p>I am working on the app in which need to implement an auto-renewable subscription</p>
  <p>basically, I have not worked yet on in-app purchase so I don't know how to start and I have a few questions as well as per my app requirement let me know what thing needs to be done</p>
  <p>I have created in-app purchase plans on the developer account which is monthly and yearly</p>
  <p>now let me know what needs to do once the purchase has been done?</p>
  <p>when do I need to check the subscription is active or not? (while app opening or while on the click of the button in which we are providing service)</p>
  <p>when should I verify the subscription or receipt?</p>
  <p>just give me the idea about this</p>