title: How to use MasterCard/Visa Payment system in an iOS App instead of AppStore one for IAP (In-App-Purchase)?
body: <p>I have an App in Appstore that is Free &amp; provides different modules that will be accessible to people who made an Annual Subscription ! </p>
  
  <p><strong>MY QUESTION</strong></p>
  
  <p>Is it possible to use my own Payment system like in "Airline Companies Apps" i.e : American Airlines, Ryanair etc...? Those apps have a MasterCard/Visa System !</p>