title: iOS SDK Auto Renewable subscription with RMStore - how to validate active subscription or not?
body: <p>I am using <a href="https://github.com/robotmedia/RMStore" rel="nofollow">RMStore</a> library to work with auto-renewable subscriptions in my iOS app. It works well for purchasing, but I can't find any documentation how to check with RMStore that current subscription is still active?</p>
  
  <p>Code for checking purchased products does not worked here:</p>
  
  <pre><code> if([persistence isPurchasedProductOfIdentifier:SUBSCRIPTION_1]) { ... }
  </code></pre>
  
  <p>This code is always show that Subscription was purchased (because it was) but does not check that this subscription already passed by date.</p>
  
  <p>I see method "<strong>isActiveAutoRenewableSubscriptionForDate</strong>" in <strong>RMAppReceipe.h</strong> file, but I does not find any documentation how to retrive subscription receipe in my app with RMStore and how to check this receipe with <strong>isActiveAutoRenewableSubscriptionForDate</strong> method. Please help.</p>
  
  <p><strong>Summary</strong>: I just need to check that subscription @"com.fanfun.apptestsubscription1" is still active for TODAY (current date) or not. Please provide sample code for this simple check.</p>