Version 2.1 is now LIVE! But a word of caution before purchasing the full engine. See notice below.
WARNING: PRIOR TO USING IN-APP PURCHASE ENSURE THAT YOUR ITUNES PAYMENT INFORMATION IS UP TO DATE (HAVE SUFFICIENT FUNDS OR ENSURE CREDIT CARD ON FILE IS STILL VALID). FAILURE TO DO SO WILL CAUSE THE APP TO CRASH. WE RECOMMEND BACKING UP YOUR SYSTEM PRIOR TO USING THE IN-APP PURCHASE. A fix has been submitted to handle this condition. If this has occurred on your iPad please contact our support team for options on correcting.