Sign in to add and modify your software
By joining Download.com, you agree to our Terms of Use and acknowledge the data practices in our Privacy Policy.
The Cardknox Payments App is the easiest way to process credit and debit card payments anytime and anywhere. Key-in card details, capture card info through your camera, and send customer email receipts all with the click of a button. Transaction data syncs with your Cardknox Merchant Portal account so you can track sales and reports via your web browser. All the Tools You Need to Accept Payments
Accept Visa, Mastercard, Discover, and American Express cards
Send email receipts
Key-in transaction amount, sales tax, invoice number, billing info, and shipping info
Capture credit card details through your camera
Support for signature capture
Apply full or partial refunds
Void pending transactions
View and Manage Transaction Data in Your Cardknox Merchant Portal Account
All payment data syncs with your browser-based Cardknox Merchant Portal account
View batch summaries, generate custom reports, locate transactions, and much more
Secure and PCI-Compliant
Cardknox utilizes advanced encryption technology to keep payment data secure and in compliance with PCI security standards
White-Glove Customer Service
Have any questions? Cardknox customer service is just a quick call or email away
The Lowest Rates
The Cardknox app is available for free with your Cardknox processing account
Choose from a simple flat-rate pricing option or custom pricing
The most competitive rates, no matter what.