I use Stripe as the payment gateway, what process that charges your payment method, as well as the subscription system. Stripe takes of all the storage and process of your personal financial information.Your credit card information NEVER  is submitted to our servers. Your credit card information is send straight Stripe on Sign Up.  Stripe is  a PCI Service Provider Level 1. The highest standard in protecting your data. You can learn more about the Security of Stripe at their security page.