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.

What’s New

Version 2.0.10

Added the Settings module, including Transaction settings, Recurring settings, General settings within Display, Key Management, User Management, Send Payment Request settings, Setup MFA.

Additional bug fixes.

Ratings and Reviews

4.7 out of 5
10 Ratings

10 Ratings

App Privacy

The developer, Cardknox Development Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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