Credit Card Validator checks a supplied card number with the Luhn algorithm and identifies its card type. It can be used to check your own number or review a customer’s payment details. Its result concerns the number’s checksum and type, not whether an account is active or a payment will be approved.
Checking a card number
Enter a number in the app to have it checked and classified. The Luhn algorithm provides the basis for the number check, while card-type identification helps distinguish supported networks. These functions bring a basic number-format check and type lookup together in one place.
Supported card types
The description names Visa, MasterCard and American Express (Amex) among the supported types, and says the app handles other card types as well. It does not specify the complete list, so support for a particular network beyond those named should not be assumed.
Entered-number handling
The app description states that Credit Card Validator does not collect, store or send entered card numbers. This privacy statement concerns the numbers entered for checking; the app’s stated purpose is validation and type identification, rather than processing a payment.