Here at KIXEYE, we don’t process payments for in-app purchases or have access to any of your credit card information.
This is because the payment transactions themselves are completed through Google Play or Apple's App Store via your personal email address associated with that account.
Receipts for these transactions are emailed to you by the processor after each purchase (though please note that any post-purchase processes are controlled by Google/Apple and are subject to change by them).