The Credit Card Checker app is a free tool that lets you check the validity of a credit card number. It uses the Luhn algorithm to determine whether the number is valid.

The app will take your input and check if the number is valid. If it is, the app will display the card details, including the card type and country name.

This tool is very easy to use, and you don't need to provide any personal information. The app doesn't require any special permissions.

It is recommended that you use it on a mobile device, as it is designed to work that way.